f/overrides/event-backup/cpdix-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
22024-12-200.703000
32013-12-230.296000
42015-12-220.597000
52017-06-270.351000
62019-06-260.412000
72020-12-210.261000
82022-12-210.194000
92016-12-220.285000
102019-12-200.585000
112023-06-280.380000
122024-06-260.020000
132025-12-190.865000
142014-06-260.312000
152018-06-270.657000
162019-03-270.041000
172023-12-210.302000
182015-06-260.492000
192017-12-210.693000
202020-06-260.577000
212021-12-221.047000
222026-06-260.683000
232014-12-221.001000
242016-06-280.341000
252018-12-210.567000
262022-06-280.626000
272025-06-260.550000
282021-06-280.849000