f/overrides/event-backup/abiax-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

475 B

1DateDividends
22012-12-200.357000
32021-12-090.371000
42025-12-110.518000
52004-12-210.536000
62005-12-161.241000
72007-12-211.393000
82015-12-170.175000
92017-12-140.277000
102018-12-130.028000
112019-12-120.145000
122022-12-080.150000
132009-12-220.172000
142010-12-210.447000
152013-12-200.634000
162024-12-120.325000
172024-11-131.021000
182006-12-141.550000
192011-12-220.502000
202016-12-150.021000
212023-12-070.166000
222003-12-220.130000
232014-12-180.396000
242020-12-100.093000