f/overrides/event-backup/oaiex-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

655 B

1DateDividends
22003-12-190.006000
32005-12-190.623000
42006-12-180.458000
52015-12-100.059000
62011-12-140.074000
72012-12-130.152000
82014-06-130.039000
92019-12-120.248000
102006-06-220.295000
112007-06-220.293000
122007-12-170.821000
132020-12-090.281000
142005-06-220.203000
152010-06-110.156000
162013-06-140.059000
172023-12-060.140000
182016-12-120.104000
192017-12-120.266000
202021-12-082.094000
212025-12-100.152000
222008-12-180.224000
232011-06-170.108000
242014-12-110.087000
252022-12-080.305000
262024-12-110.153000
272004-12-200.024000
282009-06-180.160000
292012-06-150.103000
302013-12-120.023000
312018-12-120.995000
322004-06-220.105000
332008-06-200.329000