f/overrides/event-backup/just-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

635 B

1DateDividends
22021-03-250.175000
32023-03-270.219000
42019-03-250.310000
52022-09-260.193000
62023-06-260.230000
72024-06-240.231000
82025-03-250.233000
92025-12-230.261000
102018-09-240.200000
112019-12-240.194000
122020-12-240.191000
132023-09-250.209000
142024-12-230.242000
152025-06-240.250000
162019-09-240.180000
172020-03-250.219000
182021-09-240.168000
192024-09-240.224000
202026-06-240.267000
212018-12-240.197000
222019-06-240.179000
232022-03-250.195000
242023-12-260.272000
252024-03-220.222000
262025-09-240.237000
272026-03-250.254000
282020-09-240.164000
292021-06-240.176000
302021-12-270.210000
312022-06-240.208000
322022-12-270.236000