Greg Pomerantz
54d26939dc
- fundlab/nport.py: parse the fund's own category/percentage lines, as-of date, net assets and dollar-valued positions from N-PORT schedules of investments (handles per-fund and combined multi-fund family filings; conservative keyword bucketing of positions) - fundlab/nport_cache/<sym>.json: parsed snapshots for 15 of 16 funds (raw SOI HTML kept locally, gitignored; source URLs + filing dates in nport_manifest.json, md5-verified against EDGAR) - atesx: no current SOI found (Anchor's recent filings cover the Income fund) - listed with an honest note - app.py: new 'Fund Lab' tab - pick a fund, see objective, reported composition (bar + table), rough keyword buckets, top positions, and the prospectus strategy excerpt - tests: parser unit tests (section finding, category regex, buckets)
659 lines
28 KiB
Python
659 lines
28 KiB
Python
"""Streamlit UI for stock/portfolio analysis.
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Run: streamlit run app.py
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"""
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from __future__ import annotations
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import json
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import re
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from pathlib import Path
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import pandas as pd
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import plotly.graph_objects as go
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import streamlit as st
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import metrics as m
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from data import DEFAULT_ROOT, generation, load_bundle, search_symbols, up_to_date
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from fundlab import nport
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from portfolio import parse_items, parse_weights, portfolio_returns
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from portfolios import Portfolio, delete as pf_delete, load_all as pf_load, save as pf_save
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from tax import after_tax_portfolio
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st.set_page_config(page_title="Stock & Portfolio Analyzer", layout="wide")
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# ---------------------------------------------------------------- settings
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# user inputs persist across reloads / server restarts / devices
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SETTINGS_FILE = Path(__file__).parent / "settings.json"
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_settings: dict = {}
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try:
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_settings = json.loads(SETTINGS_FILE.read_text())
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except Exception:
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pass
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def _remember(**kw) -> None:
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"""Persist current widget values (write only on change)."""
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global _settings
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changed = False
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for k, v in kw.items():
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if _settings.get(k) != v:
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_settings[k] = v
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changed = True
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if changed:
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try:
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SETTINGS_FILE.write_text(json.dumps(_settings, indent=2))
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except Exception:
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pass
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# ---------------------------------------------------------------- sidebar
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st.sidebar.title("Stock & Portfolio Analyzer")
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root = st.sidebar.text_input("Data root", str(DEFAULT_ROOT))
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rebuild = st.sidebar.checkbox("Rebuild parquet cache", value=False)
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with st.spinner("Loading data..."):
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bundle = load_bundle(root=Path(root), rebuild=rebuild)
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if not up_to_date(Path(root)):
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st.caption("Data files changed since the last cache refresh — a background "
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"thread is updating the cache; figures below may be a few minutes stale.")
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# data symbols are stored lowercase; input is resolved case-insensitively
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_LOWER2SYM = {s.lower(): s for s in bundle.adj.columns}
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def _resolve_weights(w: dict) -> dict:
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"""Map parsed symbols onto the data's symbol case (insensitive match)."""
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return {_LOWER2SYM.get(s.lower(), s): v for s, v in w.items()}
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def _replace_token(spec: str, old: str, new: str) -> str:
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"""Replace the symbol entry `old` (with or without a ':weight') by `new`.
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Grammar: spaces separate items, commas join elements of one item.
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"""
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def fix_item(item: str) -> str:
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out = []
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for p in item.split(","):
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sym = p.rsplit(":", 1)[0]
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if sym.lower() == old.lower():
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p = new if ":" not in p else new + p.rsplit(":", 1)[1]
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out.append(p)
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return ",".join(out)
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return " ".join(fix_item(it) for it in spec.split())
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st.sidebar.subheader("Portfolio")
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# hand-off from e.g. 'Load saved into field': must be applied before the
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# spec widget is (re)instantiated
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_handover = st.session_state.pop("spec_handover", None)
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if _handover is not None:
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st.session_state["spec"] = _handover
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spec = st.sidebar.text_input(
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"Symbol(s) or portfolio(s)", value=_settings.get("spec", ""), key="spec",
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help=("One or more, space-separated — same grammar as the Benchmark "
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"field.\n"
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"MSFT <- single symbol\n"
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"MSFT:0.6,V:0.4 <- portfolio (commas join its elements, bare "
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"symbols are equal-weight)\n"
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"MSFT V googl:0.5,amzn:0.5 <- three separate entries, each "
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"analyzed on its own\n"
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"The FIRST entry is the 'current' portfolio: it drives the tax "
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"detail tab, the allocation tab and Save."))
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saved = pf_load()
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if saved:
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st.sidebar.subheader("Saved portfolios")
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lcol1, lcol2 = st.sidebar.columns([3, 1])
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load_name = lcol1.selectbox("Load into field", [p.name for p in saved], key="load_name")
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if lcol2.button("Load"):
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s = next(p.spec for p in saved if p.name == load_name)
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# old specs used ', ' between elements; that would now read as two items
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st.session_state["spec_handover"] = s.replace(", ", ",")
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st.rerun()
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_scheme_labels = ["Buy & hold (drift)", "Weekly", "Monthly", "Quarterly", "Yearly"]
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scheme = st.sidebar.selectbox(
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"Rebalance scheme", _scheme_labels,
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index=min(int(_settings.get("scheme_index", 3)), len(_scheme_labels) - 1))
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freq = {
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"Buy & hold (drift)": None, "Weekly": "1W", "Monthly": "1ME",
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"Quarterly": "QE", "Yearly": "YE",
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}[scheme]
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cost_bps = st.sidebar.number_input("Trading cost (bps, one-way)", 0.0, 100.0,
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float(_settings.get("cost_bps", 5.0)))
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st.sidebar.subheader("Tax (after-tax analysis)")
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lt_rate = st.sidebar.number_input("Long-term gains %", 0.0, 49.0,
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float(_settings.get("lt_rate", 20.0))) / 100
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st_rate = st.sidebar.number_input("Short-term gains %", 0.0, 49.0,
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float(_settings.get("st_rate", 15.0))) / 100
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div_rate = st.sidebar.number_input("Dividends %", 0.0, 49.0,
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float(_settings.get("div_rate", 15.0))) / 100
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# statistics available in the Statistics tab (names = metrics.summary keys)
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_STATS_VALID = ("total_return", "return", "vol", "sharpe", "sortino",
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"max_dd", "calmar", "beta", "alpha", "ann_return_bench")
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_STATS_DEFAULT = ",".join(_STATS_VALID)
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# older saved settings may still use the long names
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_STATS_RENAME = {"ann_return": "return", "ann_vol": "vol", "alpha_ann": "alpha"}
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st.sidebar.subheader("Period & benchmark")
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_p = int(_settings.get("period", 2010))
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period = st.sidebar.selectbox("From year", range(2002, 2026),
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index=(min(max(_p, 2002), 2025) - 2002))
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bench_spec = st.sidebar.text_input(
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"Benchmark (optional)", value=_settings.get("bench_spec", ""), key="bench_spec",
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help=("Same grammar as the symbol field: a single symbol (MSFT) or a "
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"portfolio (MSFT:0.6,V:0.4 — commas join its elements).\n"
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"Spaces separate DISTINCT benchmarks, e.g.\n"
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"MSFT MSFT:0.6,V:0.4\n"
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"Empty = none. Simulated with the same rebalance scheme, cost and "
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"tax rules. Beta/alpha in the stats table refers to the first "
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"benchmark."))
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st.sidebar.subheader("Statistics")
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stats_order = st.sidebar.text_input(
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"Statistics (comma-separated, in display order)",
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value=_settings.get("stats_order", _STATS_DEFAULT), key="stats_order",
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help=("Which statistics to show on the Statistics tab, in the order they "
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"appear.\n"
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"Available: " + ", ".join(_STATS_VALID) + "\n"
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"beta, alpha_ann and ann_return_bench only have a value when a "
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"benchmark is set. Empty field = show all, default order."))
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_stats_cols = [_STATS_RENAME.get(s.strip(), s.strip())
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for s in stats_order.split(",") if s.strip()]
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_unknown_stats = [s for s in _stats_cols if s not in _STATS_VALID]
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if _unknown_stats:
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st.sidebar.warning(f"Unknown statistic(s) ignored: {', '.join(_unknown_stats)}")
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_stats_cols = [s for s in _stats_cols if s in _STATS_VALID]
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if not _stats_cols:
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_stats_cols = list(_STATS_VALID)
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st.sidebar.subheader("Date range (display, all tabs)")
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_win_labels = ["Max", "10Y", "5Y", "3Y", "1Y", "YTD", "3M", "1M"]
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_dw = _settings.get("date_window", _settings.get("equity_window", "Max"))
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win = st.sidebar.radio("Window", _win_labels, horizontal=True, key="date_window",
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index=_win_labels.index(_dw) if _dw in _win_labels else 0,
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help=("Standard window for the START of the display "
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"range, counted back from the end. The window "
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"applies to every tab.\n"
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"Max = from the first data point."))
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def _parse_date(s: str):
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"""YYYYMMDD (or YYYY-MM-DD) -> Timestamp, '' -> None, garbage -> 'bad'."""
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s = s.strip()
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if not s:
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return None
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for fmt in ("%Y%m%d", "%Y-%m-%d"):
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try:
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return pd.to_datetime(s, format=fmt)
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except Exception:
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pass
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return "bad"
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range_start = st.sidebar.text_input(
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"Start (YYYYMMDD, blank = window start)",
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value=_settings.get("range_start", ""), key="range_start",
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help="Absolute start date, e.g. 20230102 = Jan 2, 2023. Overrides the "
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"Window. Blank = the Window decides.")
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range_end = st.sidebar.text_input(
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"End (YYYYMMDD, blank = latest data)",
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value=_settings.get("range_end", ""), key="range_end",
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help="Absolute end date, e.g. 20230102 = Jan 2, 2023. Blank = latest "
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"available data.")
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_start_ts = _parse_date(range_start)
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_end_ts = _parse_date(range_end)
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if _start_ts == "bad":
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st.sidebar.warning(f"Invalid start date '{range_start.strip()}' "
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"(use YYYYMMDD) — ignored.")
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_start_ts = None
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if _end_ts == "bad":
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st.sidebar.warning(f"Invalid end date '{range_end.strip()}' "
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"(use YYYYMMDD) — ignored.")
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_end_ts = None
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# remember the sidebar inputs now, before any validation st.stop()
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_remember(spec=spec, bench_spec=bench_spec, scheme_index=_scheme_labels.index(scheme),
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cost_bps=cost_bps, lt_rate=lt_rate * 100, st_rate=st_rate * 100,
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div_rate=div_rate * 100, period=period, stats_order=stats_order,
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date_window=win, range_start=range_start, range_end=range_end)
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if not spec.strip():
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st.info("Type symbols or portfolios in the sidebar — e.g. `MSFT` or "
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"`MSFT:0.6,V:0.4`; space-separated entries are each analyzed "
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"separately. The page updates as soon as the input is valid.")
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st.stop()
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try:
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items = [_resolve_weights(w) for w in parse_items(spec)]
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except ValueError as e:
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st.error(f"Invalid input: {e}")
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st.stop()
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weights = items[0] # first entry = the 'current' portfolio
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all_syms = {s for w in items for s in w}
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unknown = [s for s in all_syms if s not in bundle.adj.columns]
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if unknown:
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st.error(f"Symbol field — not in the data: {', '.join(unknown)}")
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for u in unknown[:2]:
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cands = [s for s in search_symbols(bundle, u, limit=4) if s not in all_syms]
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if cands:
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st.caption(f"Did you mean {u}:")
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cols = st.sidebar.columns(2)
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for i, s in enumerate(cands):
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if cols[i % 2].button(s, key=f"fix-{u}-{s}", use_container_width=True):
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st.session_state["spec_handover"] = _replace_token(spec, u, s)
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st.rerun()
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st.stop()
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start = f"{period}-01-01"
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use_syms = list(weights)
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# ---- save / delete / select saved portfolios -------------------------
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st.sidebar.subheader("Saved portfolios")
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if len(items) == 1:
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pname = st.sidebar.text_input("Name to save current portfolio as", key="save_name")
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if st.sidebar.button("Save current portfolio"):
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pname = pname.strip()
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if pname:
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# commas without spaces: under the spec grammar that stays ONE portfolio
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spec_str = ",".join(f"{s}:{w:g}" for s, w in weights.items())
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pf_save(Portfolio(pname, spec_str, freq, cost_bps))
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st.sidebar.success(f"Saved '{pname}'.")
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st.rerun()
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else:
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st.sidebar.warning("Give it a name first (field below).")
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else:
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st.sidebar.caption("Save: the Symbol field must hold exactly ONE "
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"portfolio to save (it would save the first entry).")
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compare_names: list[str] = []
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if saved:
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compare_names = st.sidebar.multiselect(
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"Compare on the chart", [p.name for p in saved],
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default=[p.name for p in saved])
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dcol1, dcol2 = st.sidebar.columns([3, 1])
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del_name = dcol1.text_input("Delete by name", key="del_name")
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if dcol2.button("Delete") and del_name.strip():
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pf_delete(del_name.strip())
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st.rerun()
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# ------------------------------------------------------------ compute
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# cache the heavy simulations: switching the chart window / curve toggle / tax
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# rates only rebuilds the (cheap) HTML — the portfolio+tax runs happen once
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@st.cache_data(show_spinner=False)
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def _compute_portfolio(w_key: tuple, scheme: str | None, cost_bps: float,
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start: str, lt: float, st_r: float, div: float,
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root: str, gen: int):
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w = dict(w_key)
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r = portfolio_returns(bundle.adj, w, rebalance=scheme, cost_bps=cost_bps, start=start)
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t = after_tax_portfolio(bundle.adj, bundle.div, bundle.capg, w, rebalance=scheme,
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cost_bps=cost_bps, lt_rate=lt, st_rate=st_r,
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div_rate=div, start=start)
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return r, t
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def build_result(name: str, w: dict, scheme: str | None, cost: float) -> dict:
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r, t = _compute_portfolio(tuple(sorted(w.items())), scheme, cost, start,
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lt_rate, st_rate, div_rate, str(root),
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generation(Path(root)))
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return {"name": name, "weights": w, "res": r, "tax": t}
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results = []
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for k, w in enumerate(items):
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name = "Current" if len(items) == 1 else ", ".join(w)
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results.append(build_result(name, w, freq, cost_bps))
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for p in saved:
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if p.name not in compare_names:
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continue
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try:
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w = {s: v for s, v in parse_weights(p.spec).items() if s in bundle.adj.columns}
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if not w:
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st.sidebar.warning(f"'{p.name}': no known symbols, skipped.")
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continue
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results.append(build_result(p.name, w, p.scheme, p.cost_bps))
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except Exception as e:
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st.sidebar.warning(f"'{p.name}': {e}")
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res, taxres = results[0]["res"], results[0]["tax"]
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# benchmark: same spec format as the main field, simulated with the same
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# rebalance scheme and cost; invalid/unknown input just disables it
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# benchmarks: ';' separates independent specs; each is simulated exactly
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# like the candidate portfolio (same scheme, cost and tax rules)
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# each item (line, or space-separated on a line) is one benchmark
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benchmarks: list[dict] = []
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for i, item in enumerate(bench_spec.split(), 1):
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try:
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w = _resolve_weights(parse_weights(item))
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except ValueError as e:
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st.sidebar.warning(f"Benchmark {i} ignored: {e}")
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continue
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unknown = [s for s in w if s not in bundle.adj.columns]
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if unknown:
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st.sidebar.warning(f"Benchmark {i} ignored: not in the data: "
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f"{', '.join(unknown)}")
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continue
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try:
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r, t = _compute_portfolio(tuple(sorted(w.items())), freq, cost_bps, start,
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lt_rate, st_rate, div_rate, str(root),
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generation(Path(root)))
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except ValueError as e:
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st.sidebar.warning(f"Benchmark {i} ignored: {e}")
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continue
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benchmarks.append({
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"label": ", ".join(w),
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"price": r.equity.reindex(res.equity.index).ffill(),
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"after": t.equity.reindex(res.equity.index).ffill(),
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})
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# first benchmark is the reference for beta/alpha in the stats table
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bench_price = benchmarks[0]["price"] if benchmarks else None
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bench_after = benchmarks[0]["after"] if benchmarks else None
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bench_label = benchmarks[0]["label"] if benchmarks else None
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# ------------------------------------------------------------ display
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if len(items) == 1:
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if len(use_syms) == 1:
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st.title(f"{use_syms[0]} — single symbol")
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else:
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st.title(f"Portfolio: {', '.join(use_syms)}")
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else:
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st.title("Portfolios: " + " · ".join(", ".join(w) for w in items))
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if len(results) > 1:
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st.caption(f"Comparing: {', '.join(r['name'] for r in results)}")
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st.caption(f"{scheme} · start {start} · cost {cost_bps} bps · "
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f"tax LT/ST/div {lt_rate:.0%}/{st_rate:.0%}/{div_rate:.0%}"
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+ (f" · benchmark: {' ; '.join(b['label'] for b in benchmarks)}"
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if benchmarks else ""))
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# global curve mode — applies to the stats table AND the chart
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_mode_labels = ["Pre-tax", "After-tax", "Pre-tax + after-tax"]
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mode = st.radio("Curve", _mode_labels,
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horizontal=True, key="curve_mode",
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index=_mode_labels.index(_settings["curve_mode"])
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if _settings.get("curve_mode") in _mode_labels else 0)
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show_pre, show_after, both = mode != "After-tax", mode != "Pre-tax", \
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mode == "Pre-tax + after-tax"
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# ------------------------------------------------------------ display range
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# one global [lo, hi] window applied to every tab (display only — the
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# simulation itself still starts at 'From year'). Start: the Start box wins,
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# else the Window counted back from the end. End: the End box, else latest.
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_data_idx = res.equity.index
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_data_start, _data_end = _data_idx[0], _data_idx[-1]
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hi = _end_ts if _end_ts is not None else _data_end
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if _start_ts is not None:
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lo = _start_ts
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elif win == "YTD":
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lo = pd.Timestamp(hi.year, 1, 1)
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elif win != "Max":
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unit = "years" if win.endswith("Y") else "months"
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lo = hi - pd.DateOffset(**{unit: int(win[:-1])})
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else:
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lo = _data_start
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if lo > hi or len(_data_idx[(_data_idx >= lo) & (_data_idx <= hi)]) < 2:
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st.sidebar.warning("Date range covers no (or one) data point — "
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"showing the full range.")
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lo, hi = _data_start, _data_end
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def rng(s):
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"""Clip a price/return series (or frame) to the display range."""
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return s[(s.index >= lo) & (s.index <= hi)]
|
||
|
||
tab_stats, tab_equity, tab_alloc, tab_tax, tab_corr, tab_fundlab = st.tabs(
|
||
["Statistics", "Equity curves", "Allocation", "Tax detail",
|
||
"Correlation", "Fund Lab"])
|
||
|
||
with tab_stats:
|
||
# one table per benchmark: same rows, but beta/alpha/bench-return are
|
||
# measured against THAT benchmark (no benchmarks -> single table
|
||
# without those columns). One row per candidate (the whole portfolio,
|
||
# not its components); the pre/after suffix only appears in 'both' mode.
|
||
candidates = [(r["name"], r["res"].equity, r["tax"].equity) for r in results]
|
||
|
||
def bench_block(bench: dict | None) -> None:
|
||
rows = [(n, rng(p), rng(a)) for n, p, a in candidates]
|
||
if bench is not None:
|
||
rows.append((f"benchmark: {bench['label']}", rng(bench["price"]),
|
||
rng(bench["after"])))
|
||
bm = (rng(bench["price"]).resample("ME").last()
|
||
if bench is not None else None)
|
||
|
||
def pick(d: dict) -> dict:
|
||
# user-configured selection + order; skip columns the summary
|
||
# lacks (e.g. beta without a benchmark)
|
||
out = {}
|
||
for k in _stats_cols:
|
||
if k in d:
|
||
out[k] = d[k]
|
||
return out
|
||
|
||
summaries = {}
|
||
for name, pre, after in rows:
|
||
if both:
|
||
summaries[f"{name} (pre-tax)"] = pick(m.summary(pre, bm))
|
||
summaries[f"{name} (after-tax)"] = pick(m.summary(after, bm))
|
||
elif show_pre:
|
||
summaries[name] = pick(m.summary(pre, bm))
|
||
else:
|
||
summaries[name] = pick(m.summary(after, bm))
|
||
st.dataframe(m.format_summary_table(summaries), width='stretch')
|
||
|
||
if benchmarks:
|
||
for b in benchmarks:
|
||
st.subheader(f"vs {b['label']}")
|
||
bench_block(b)
|
||
else:
|
||
bench_block(None)
|
||
|
||
with tab_equity:
|
||
# Self-contained plotly.js page (see chart_widget.py): full mouse zoom +
|
||
# pan, with every relayout instantly clamping x to the data and re-fitting
|
||
# y to the exact min/max of the visible data. No clipping, no blank space.
|
||
from chart_widget import equity_chart_html
|
||
|
||
_remember(curve_mode=mode)
|
||
idx = rng(res.equity).index
|
||
|
||
# labels carry the pre/after suffix only in 'both' mode
|
||
palette = ["#1f77b4", "#ff7f0e", "#2ca02c", "#d62728",
|
||
"#9467bd", "#17becf", "#e377c2", "#8c564b"]
|
||
|
||
def lab(name, which):
|
||
return f"{name} — {which}" if both else name
|
||
|
||
series: dict[str, pd.Series] = {}
|
||
styles: dict[str, dict] = {}
|
||
for k, r in enumerate(results):
|
||
color = palette[k % len(palette)]
|
||
if show_pre:
|
||
series[lab(r["name"], "pre-tax")] = rng(r["res"].equity)
|
||
styles[lab(r["name"], "pre-tax")] = {"color": color, "width": 2}
|
||
if show_after:
|
||
s = lab(r["name"], "after-tax")
|
||
series[s] = rng(r["tax"].equity)
|
||
# faded only in 'both' mode, to stay distinct from the pre-tax line
|
||
styles[s] = {"color": color, "width": 2,
|
||
"opacity": 0.55 if both else 1.0}
|
||
for b in benchmarks:
|
||
base = f"benchmark ({b['label']})"
|
||
if show_pre:
|
||
p = rng(b["price"])
|
||
s = lab(base, "pre-tax")
|
||
series[s] = p / p.iloc[0]
|
||
styles[s] = {"width": 1, "opacity": 0.6}
|
||
if show_after:
|
||
p = rng(b["after"])
|
||
s = lab(base, "after-tax")
|
||
series[s] = p / p.iloc[0]
|
||
styles[s] = {"width": 1, "opacity": 0.3 if both else 0.6}
|
||
|
||
html = equity_chart_html(series, idx, ytitle="growth (1.0 = start)", styles=styles)
|
||
st.iframe(html, height=600)
|
||
def final(name, pre, after):
|
||
if both:
|
||
return f"{name}: pre {pre:.2f}× / after {after:.2f}×"
|
||
return f"{name}: {(pre if show_pre else after):.2f}×"
|
||
|
||
finals = " · ".join(final(r["name"], rng(r["res"].equity).iloc[-1],
|
||
rng(r["tax"].equity).iloc[-1]) for r in results)
|
||
for b in benchmarks:
|
||
finals += " · " + final(f"benchmark ({b['label']})",
|
||
rng(b["price"]).iloc[-1],
|
||
rng(b["after"]).iloc[-1])
|
||
st.caption(f"Final: {finals}. "
|
||
"Drag to box-zoom, right-drag (or mode-bar hand) to pan, "
|
||
"scroll to zoom, double-click to reset.")
|
||
|
||
with tab_alloc:
|
||
st.caption(f"Allocation for the **{results[0]['name']}** portfolio "
|
||
"(first entry in the Symbol field).")
|
||
alloc = rng(res.allocation)
|
||
st.dataframe(alloc.tail(1).T, width='stretch')
|
||
fig = go.Figure(go.Bar(x=alloc.columns, y=alloc.iloc[-1]))
|
||
fig.update_layout(height=360, title=f"Drifted allocation @ {alloc.index[-1].date()}")
|
||
st.plotly_chart(fig, width='stretch')
|
||
st.caption(f"Final allocation: " +
|
||
", ".join(f"{k} {v:.1%}" for k, v in alloc.iloc[-1].items()))
|
||
|
||
with tab_tax:
|
||
st.caption(f"Tax detail for the **{results[0]['name']}** portfolio "
|
||
"(first entry in the Symbol field).")
|
||
# all values below are fractions of the starting account (1.0 = 100%)
|
||
yr_tax = rng(taxres.taxes).resample("YE").sum()
|
||
yr_tax.index = yr_tax.index.year
|
||
yr_tax = yr_tax.map(lambda v: f"{v:.2%}")
|
||
yr_real = rng(taxres.realized).resample("YE").sum()
|
||
yr_real.index = yr_real.index.year
|
||
yr_real = yr_real.map(lambda v: f"{v:+.2%}")
|
||
yr_liq = rng(taxres.liq_tax).resample("YE").last()
|
||
yr_liq.index = yr_liq.index.year
|
||
yr_liq = yr_liq.map(lambda v: f"{v:.2%}")
|
||
st.subheader("Taxes actually paid per year (distributions + rebalance sales)")
|
||
st.dataframe(yr_tax, width='stretch')
|
||
st.subheader("Realized gains/losses per year (at rebalances)")
|
||
st.dataframe(yr_real, width='stretch')
|
||
st.subheader("Unrealized-gain tax you would owe if you sold everything (year-end)")
|
||
st.dataframe(yr_liq, width='stretch')
|
||
_tax_total = rng(taxres.taxes)["total"].sum()
|
||
_final_after = rng(taxres.equity).iloc[-1]
|
||
st.caption(f"Total taxes paid to date: {_tax_total:.2%} of start · "
|
||
f"final after-tax value (sell everything): {_final_after:.2f}× "
|
||
f"= {_final_after - 1:+.1%} total return")
|
||
|
||
with tab_corr:
|
||
# cross-correlation (daily returns, pairwise over common history):
|
||
# per portfolio, its components vs the benchmarks; then all portfolios
|
||
# vs the benchmarks
|
||
def corr_block(title: str, series: dict[str, pd.Series]) -> None:
|
||
if len(series) < 2:
|
||
return
|
||
st.subheader(title)
|
||
tbl = m.xcorr(series)
|
||
# the table is symmetric: row names double as column names, so the
|
||
# columns are just numbered 1..n (column i = row i)
|
||
tbl.columns = range(1, len(tbl.columns) + 1)
|
||
st.dataframe(tbl, width='stretch')
|
||
|
||
for r in results:
|
||
if len(r["weights"]) < 2:
|
||
continue # single component: it already has a row in the
|
||
# all-portfolios table below
|
||
series = {s: rng(bundle.adj[s]) for s in r["weights"]}
|
||
series.update({f"benchmark: {b['label']}": rng(b["price"])
|
||
for b in benchmarks})
|
||
corr_block(f"{r['name']} — components vs benchmarks", series)
|
||
series = {r["name"]: rng(r["res"].equity) for r in results}
|
||
series.update({f"benchmark: {b['label']}": rng(b["price"])
|
||
for b in benchmarks})
|
||
corr_block("All portfolios vs benchmarks", series)
|
||
st.caption("Pearson correlation of daily returns; pairs correlate over their "
|
||
"common history. Benchmarks are prefixed with 'benchmark: '. "
|
||
"The table is symmetric — column number i is the series of row i.")
|
||
|
||
# ---------------------------------------------------------------- fund lab
|
||
# per-fund report mockup from N-PORT schedules of investments (fundlab)
|
||
with tab_fundlab:
|
||
try:
|
||
_FUNDS = json.loads((Path(__file__).parent / "funds.json").read_text())
|
||
except Exception:
|
||
_FUNDS = {}
|
||
_MAN = nport.manifest()
|
||
_ORDER = list(nport.FUND_TOKENS)
|
||
_FL_LABELS = {s: f"{s.upper()} — {_FUNDS[s]['name']}"
|
||
for s in _ORDER if s in _FUNDS}
|
||
_fl_pick = st.selectbox("Fund (shortlist)", list(_FL_LABELS),
|
||
format_func=lambda s: _FL_LABELS[s],
|
||
key="fundlab_pick")
|
||
_f = _FUNDS.get(_fl_pick, {})
|
||
_man = _MAN.get(_fl_pick, {})
|
||
st.subheader(f"{_f.get('name', _fl_pick)} · {_fl_pick.upper()}")
|
||
st.write(_f.get("objective") or "_no objective on file_")
|
||
_src_bits = []
|
||
if _f.get("category"):
|
||
_src_bits.append(f"category: **{_f['category']}**")
|
||
if _man.get("filed"):
|
||
_src_bits.append(f"N-PORT filed {_man['filed']}")
|
||
if _man.get("url"):
|
||
_src_bits.append(f"[source filing]({_man['url']})")
|
||
if _src_bits:
|
||
st.caption(" · ".join(_src_bits))
|
||
|
||
snap = nport.build(_fl_pick, nport.FUND_TOKENS[_fl_pick])
|
||
if snap is None:
|
||
st.info("Holdings not available: "
|
||
+ (_man.get("note") or "no cached N-PORT filing for this fund."))
|
||
else:
|
||
c1, c2, c3, c4 = st.columns(4)
|
||
c1.metric("As of", snap.get("as_of") or "?")
|
||
c2.metric("Net assets",
|
||
f"${snap['net_assets']:,.0f}" if snap.get("net_assets") else "?")
|
||
c3.metric("Positions parsed", f"{snap['n_positions']}")
|
||
c4.metric("Categories", f"{len(snap['categories'])}")
|
||
|
||
lc, rc = st.columns([3, 2])
|
||
with lc:
|
||
st.markdown("**Reported composition** — the fund's own "
|
||
"category/percentage lines, in filing order")
|
||
if snap["categories"]:
|
||
cats = pd.DataFrame(snap["categories"])
|
||
fig = go.Figure(go.Bar(
|
||
x=cats["pct"].head(20)[::-1],
|
||
y=cats["name"].head(20)[::-1],
|
||
orientation="h", marker_color="#4c78a8"))
|
||
fig.update_layout(height=380, margin=dict(l=0, r=0, t=8, b=8),
|
||
xaxis_title="% of net assets")
|
||
st.plotly_chart(fig, width="stretch")
|
||
with st.expander("All category lines"):
|
||
st.dataframe(cats, width="stretch")
|
||
else:
|
||
st.caption("No category lines could be parsed from this filing.")
|
||
with rc:
|
||
st.markdown("**Rough keyword buckets** — my coarse parse of the "
|
||
"position lines, *not* the fund's own classification")
|
||
if snap["buckets"]:
|
||
bks = pd.DataFrame(snap["buckets"])
|
||
bks["value"] = bks["value"].map(lambda v: f"${v:,.0f}")
|
||
st.dataframe(bks, width="stretch")
|
||
else:
|
||
st.caption("No position values could be parsed.")
|
||
if snap["top"]:
|
||
with st.expander(f"Top positions ({len(snap['top'])})"):
|
||
top = pd.DataFrame(snap["top"])
|
||
top["value"] = top["value"].map(lambda v: f"${v:,.0f}")
|
||
st.dataframe(top, width="stretch")
|
||
|
||
if _f.get("strategy"):
|
||
st.markdown("**Strategy (excerpt from the prospectus)**")
|
||
st.write(_f["strategy"])
|
||
st.caption(
|
||
"Mockup: category lines are taken verbatim from the filing and "
|
||
"parsed heuristically (each family formats its schedule "
|
||
"differently), so expect the odd mis-parse. Positions are only "
|
||
"counted where the layout exposes a dollar value; the bucket "
|
||
"table is a rough keyword classification. N-PORT holdings are "
|
||
"quarterly and up to ~60 days stale.")
|