f/overrides/event-backup/agbvx-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

655 B

1DateDividends
22012-09-180.243000
32015-12-280.043000
42018-12-200.575000
52024-06-180.097000
62012-12-110.013000
72013-12-100.037000
82017-12-260.169000
92019-12-200.175000
102023-09-190.041000
112025-06-240.026000
122012-12-260.093000
132013-09-100.415000
142017-12-190.026000
152020-03-100.032000
162022-09-200.040000
172025-12-160.189000
182014-12-230.439000
192020-06-160.032000
202023-12-190.122000
212026-03-100.022000
222026-06-090.105000
232016-12-200.029000
242020-12-220.031000
252022-09-300.040000
262024-12-170.138000
272025-09-230.111000
282016-12-270.115000
292021-12-210.220000
302022-06-210.034000
312022-03-220.039000
322022-12-210.462000
332025-03-250.079000