f/overrides/event-backup/fiwtx-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

455 B

1DateDividends
22024-12-300.661000
32025-12-300.874000
42018-12-280.345000
52019-05-100.061000
62019-12-302.543000
72020-12-300.317000
82022-05-130.069000
92023-12-280.361000
102017-05-120.031000
112021-05-140.127000
122022-12-290.354000
132023-05-120.022000
142024-05-100.267000
152026-05-080.160000
162015-12-290.244000
172018-05-110.034000
182016-05-130.026000
192016-12-280.243000
202017-12-280.268000
212020-05-080.104000
222021-12-300.351000
232025-05-090.137000