f/overrides/event-backup/btmfx-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

355 B

1DateDividends
22016-12-081.079000
32021-12-141.226000
42025-12-162.492000
52020-12-150.251000
62024-12-121.032000
72010-12-090.230000
82011-12-080.426000
92015-12-100.966000
102017-12-121.140000
112018-12-110.941000
122013-12-180.392000
132014-12-110.776000
142019-12-100.724000
152023-12-121.014000
162012-12-110.323000
172012-12-310.031000
182022-12-131.001000