f/overrides/event-backup/csirx-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

315 B

1DateDividends
22015-12-090.421000
32019-12-172.429000
42024-06-120.337000
52025-06-100.853000
62014-12-092.985000
72022-06-080.924000
82017-12-180.105000
92020-06-100.092000
102021-06-100.251000
112021-12-201.679000
122015-06-030.098000
132016-12-070.246000
142018-12-181.855000
152019-06-120.412000
162025-12-171.188000