f/overrides/event-backup/bdskx-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

455 B

1DateDividends
22018-07-190.270000
32019-04-100.124000
42020-07-160.031000
52020-12-070.437000
62022-12-080.105000
72024-12-110.111000
82026-07-221.057000
92016-12-060.086000
102017-07-200.215000
112019-07-180.035000
122023-12-070.124000
132025-07-170.068000
142025-12-110.892000
152016-07-210.010000
162019-12-050.108000
172021-07-151.019000
182021-12-071.211000
192017-12-040.164000
202018-12-060.405000
212022-07-140.305000
222023-07-200.044000
232024-07-180.038000