f/overrides/event-backup/esgd-dividend.csv
Greg Pomerantz bb8e39605e Event-history protection: backup dir, empty-download fallback, docs
Yahoo's 2026 event-feed change (capitalGain events dropped for some
funds; no events at all for terminated tickers) can wipe good event
history on re-download. Defense in depth:

- overrides/event-backup/: last-known-good copy of every dividend/
  capitalGain file (8,192 files, 58 MB); refresh with
  scripts/backup_events.py after each dump update
- data.py event_file(): frozen > data-root (while populated) > backup;
  used by panel reads, verify_official, and the double-listing scanner
- README: capital-gain files are mutual-fund-only in this dump; Yahoo
  has no LT/ST split (tax.py taxes capg at lt_rate; the per-fund split
  would come from fund-company annual tax statements or commercial feeds)
- tests: exact Timestamp .loc keys (pandas 3.x string matching returns a
  Series on large DatetimeIndex)
2026-08-31 21:59:25 -04:00

435 B

1DateDividends
22020-12-140.608000
32021-06-101.062000
42021-12-131.007000
52024-12-171.005000
62018-12-180.526000
72018-06-191.020000
82020-06-150.585000
92024-06-111.457000
102025-06-161.631000
112016-12-210.051000
122019-12-160.598000
132022-06-091.396000
142022-12-130.308000
152023-06-071.367000
162026-06-151.629000
172017-12-190.736000
182019-06-171.172000
192021-12-300.114000
202023-12-200.918000
212025-12-161.795000
222017-06-201.060000