f/overrides/event-backup/frdm-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

495 B

1DateDividends
22019-06-170.035000
32019-12-300.091000
42020-09-140.086000
52024-06-270.420000
62024-12-300.213000
72025-09-290.215000
82026-06-290.330000
92020-12-300.132000
102023-12-200.254000
112025-03-280.270000
122025-12-230.329000
132026-03-300.226000
142020-06-150.137000
152021-09-130.127000
162021-12-300.500000
172022-12-290.751000
182023-09-270.231000
192024-09-270.171000
202025-06-270.346000
212019-09-160.168000
222021-06-140.093000
232023-03-290.099000
242023-06-280.290000
252024-03-260.025000