f/overrides/event-backup/herix-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

495 B

1DateDividends
22011-12-220.016000
32014-12-300.083000
42016-12-280.103000
52019-03-280.028000
62019-04-290.028000
72012-12-200.070000
82013-12-300.071000
92017-12-270.156000
102019-02-270.024000
112024-12-270.293000
122025-12-110.282000
132014-06-260.006000
142015-12-290.168000
152019-01-300.022000
162019-12-270.217000
172023-12-270.341000
182025-12-290.370000
192013-12-130.081000
202014-12-120.633000
212015-12-110.098000
222018-12-270.184000
232020-12-290.116000
242021-12-290.229000
252022-12-280.297000