f/overrides/event-backup/jaayx-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
22019-03-290.047000
32020-09-300.081000
42021-06-300.120000
52021-12-310.314000
62017-12-290.179000
72024-12-310.576000
82020-03-310.047000
92022-12-300.370000
102025-12-310.688000
112018-12-310.141000
122017-03-310.036000
132017-09-290.080000
142017-12-150.003000
152018-12-140.163000
162019-06-280.145000
172019-12-310.152000
182021-03-310.060000
192016-09-300.042000
202021-09-300.071000
212021-12-150.544000
222023-12-290.454000
232025-12-150.053000
242018-09-280.066000
252020-06-300.049000
262018-03-290.038000
272019-09-300.066000
282020-12-310.122000
292017-06-300.107000
302018-06-290.134000
312019-12-160.040000
322020-12-150.003000
332016-12-300.145000