f/overrides/event-backup/eaor-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
22021-12-230.176000
32023-10-030.136000
42025-12-230.304000
52026-07-020.263000
62020-07-020.101000
72020-10-020.071000
82021-04-050.062000
92023-04-040.128000
102023-12-220.224000
112024-07-020.234000
122024-10-020.163000
132024-12-200.253000
142021-10-040.067000
152022-04-040.061000
162022-07-050.171000
172022-10-040.124000
182024-04-020.141000
192025-04-020.144000
202025-07-020.258000
212026-04-020.163000
222020-12-240.140000
232021-07-020.130000
242021-12-300.006000
252022-12-230.160000
262023-07-050.207000
272025-10-020.159000