f/overrides/event-backup/bul-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

535 B

1DateDividends
22021-06-210.011000
32023-06-220.133000
42024-12-270.009000
52019-06-250.065000
62020-09-210.075000
72023-09-210.222000
82024-03-210.062000
92024-06-270.036000
102024-09-260.032000
112020-03-230.061000
122022-06-230.056000
132020-06-220.068000
142021-03-220.023000
152022-03-240.050000
162022-09-220.053000
172022-12-220.080000
182023-03-230.203000
192019-09-240.068000
202019-12-240.078000
212026-06-040.006000
222025-03-060.019000
232025-06-050.012000
242025-09-040.033000
252025-12-300.091000
262020-12-210.023000
272023-12-270.213000