f/overrides/event-backup/idrv-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

375 B

1DateDividends
22022-12-130.224000
32025-12-160.338000
42023-12-200.338000
52024-06-110.406000
62026-06-150.303000
72019-12-160.172000
82020-06-150.181000
92020-12-140.112000
102020-12-300.005000
112022-06-090.439000
122024-12-170.378000
132019-06-170.182000
142021-06-100.202000
152021-12-130.142000
162021-12-300.262000
172022-12-290.111000
182023-06-070.439000
192025-06-160.307000