f/overrides/event-backup/iefa-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

595 B

1DateDividends
22018-06-191.151000
32021-06-101.088000
42025-06-161.467000
52016-12-210.594000
62022-06-091.332000
72012-12-180.171000
82013-12-180.539000
92016-06-220.995000
102017-06-200.965000
112015-06-250.999000
122020-06-150.700000
132023-06-071.284000
142024-12-171.130000
152014-06-251.169000
162019-12-160.880000
172020-12-140.612000
182024-06-111.310000
192013-06-270.776000
202018-12-180.752000
212014-12-170.546000
222015-12-210.431000
232021-12-300.110000
242022-12-130.335000
252017-12-190.731000
262019-06-171.197000
272021-12-131.277000
282023-12-200.968000
292025-12-161.711000
302026-06-151.578000