f/overrides/event-backup/fm-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

535 B

1DateDividends
22021-12-300.002010
32022-06-090.607088
42023-06-070.427574
52024-06-110.621598
62016-06-220.508736
72017-12-190.374712
82020-06-150.638353
92018-06-190.805281
102021-06-100.490363
112021-12-130.212318
122022-12-130.079552
132013-06-270.025394
142017-06-200.274539
152017-12-280.026146
162016-12-210.026201
172018-12-180.317198
182019-06-170.792812
192020-12-140.187446
202023-12-200.524932
212013-12-180.066298
222014-06-250.826452
232014-12-172.823146
242024-12-170.451057
252015-06-250.603929
262015-12-210.083552
272019-12-160.155604