f/fundlab/nport_cache/cik_map.json
Greg Pomerantz a09861f39f N-PORT cross-check: verify top candidates' actual holdings
fundlab/xcheck.py - for each screen candidate, resolve the fund's OWN
registrant CIK (browse-edgar; the 497-cover CIK is the family/trust),
get the exact series name for the ticker (the only reliable
disambiguator between sibling funds), walk the 4 most recent NPORT-P
filing dates, and parse holdings from the interactive NPORT XML
(primary_doc.xml at the accession root - NOT the XSL-rendered view the
submissions API points at). Exact seriesName match > best htm exhibit
parse. Buckets from the authoritative assetCat+issuerCat codes (ABS-O,
ABS-CBDO, DBT+UST/CORP/MUN/NUSS, LON, STIV, RA, EC+RF=fund, ...), not
position-name keywords. Resumable; raw filings cached under
nport_cache/raw/ (gitignored).

nport.py - _SECTION gains the "INVESTMENT PORTFOLIO (unaudited)"
variant (NPORT-EX Sch-F files); find_section/build gain a frac
token-tolerance param (Yahoo names drift from filing names); CMBS/ABS
bucket gains CLO/CBDO/DAC terms.

app Fund Lab - "N-PORT cross-check" expander: per-candidate table
(as-of, n, t5, top code-bucket, #1 position) + per-fund holdings
detail.

RESEARCH.md - cross-check verdicts. 21/22 resolved (qcmmrx is an MMF,
no holdings). The screen's top names are REAL:
- hmezx/mervx = genuine merger arb (equity in deal targets + escrow)
- egrix = 100% wrapper in one macro managed portfolio (underlying not
  NPORT-disclosed); etsix = fund of EV internal multi-strat accounts
- wmnux = discounted/zero-coupon corporate bonds + equity swaps (the
  "equity names" are bond issuers/swap underlyings)
- scfzx/rctix/aflix = securitized credit/CLO/distressed/levered loans
- hicox/fhmix/usmsx/btmix (munis), aguax/femdx (EM sovereign), anglx
  (agency MBS), lpxax (rotated out of prefs into bank/financial debt)
  = genuine missing-factor exposures the 35-sleeve model lacks
- fhcox/dultx/safex = short-duration carry (a short-duration sleeve
  would explain them)

tests/test_fundlab.py - test_xcheck (14 checks): parse_interactive,
code buckets, name-match normalization, series-name disambiguation.
Also: untrack fundlab/streamlit.log; gitignore raw/ + xcheck_run.log.

84 fundlab / 32 app / 14 data tests pass.
2026-08-27 12:43:17 -04:00

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JSON

{
"HMEZX": "0001354917",
"EGRIX": "0000745463",
"HICOX": "0000810744",
"ETSIX": "0000745463",
"SCFZX": "0000887991",
"WMNUX": "0001545440",
"COIAX": "0000804239",
"FHCOX": "0001707560",
"RCTIX": "0001516523",
"AFLIX": "0001552947",
"FHMIX": "0001707560",
"DULTX": "0000230173",
"USMSX": "0001659326",
"BTMIX": "0001282693",
"SAFEX": "0001257927",
"QCMMRX": "777535",
"MERVX": "0001208133",
"COIAAX": "1003632",
"AGUAX": "0000809593",
"DMSZX": "0001688680",
"ANGLX": "0001612930",
"FEMDX": "0001124459",
"LPXAX": "0001652200"
}