f/overrides/event-backup/dessx-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

555 B

1DateDividends
22008-12-180.110000
32010-12-170.122000
42023-12-190.558000
52017-12-190.656000
62005-12-200.020000
72010-04-300.035000
82006-03-240.040000
92009-12-180.164000
102020-12-170.704000
112021-12-172.538000
122022-12-190.674000
132015-03-240.045000
142015-12-171.198000
152012-12-190.159000
162016-03-230.202000
172019-12-181.164000
182025-12-171.468000
192007-12-180.806000
202008-03-240.074000
212016-12-190.907000
222006-12-190.265000
232011-12-190.111000
242014-03-240.030000
252024-12-181.815000
262013-12-180.111000
272014-12-180.687000
282018-12-192.712000