f/overrides/event-backup/ienax-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

396 B

1DateDividends
22022-12-160.253000
32023-12-150.589000
42024-12-161.144000
52025-12-180.693000
62016-12-130.307000
72018-12-140.544000
82021-12-160.336000
92009-12-110.023000
102014-12-124.416000
112020-12-150.270000
122006-12-156.547000
132008-12-120.402000
142013-12-130.411000
152015-12-110.359000
162017-12-130.557000
172019-12-130.281000
182005-12-162.363000
192007-12-1410.414000
202010-12-100.031000