f/overrides/event-backup/algrx-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
22017-12-151.226000
32020-12-163.391000
42025-12-178.085000
51999-06-280.380000
62009-12-220.045000
72015-12-160.269000
82005-12-200.041000
92010-12-210.104000
102023-12-140.053000
111997-06-241.171000
121998-07-061.215000
132000-06-271.914000
142018-12-181.623000
152019-12-180.825000
162022-12-150.024000
172000-12-150.994000
182021-12-157.964000