f/overrides/event-backup/icpax-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

775 B

1DateDividends
22020-03-270.023000
32022-03-290.016000
42024-06-260.018000
52025-09-260.006000
62024-12-270.009000
72021-03-290.012000
82021-06-280.008000
92022-06-280.010000
102023-06-280.012000
112023-09-270.017000
122025-12-290.010000
132013-12-270.326000
142016-12-280.010000
152017-12-270.006000
162022-12-280.015000
172024-03-260.015000
182006-12-274.286000
192007-12-285.152000
202010-04-300.035000
212018-12-270.023000
222023-03-290.027000
232024-09-260.021000
242025-03-270.011000
252025-06-260.014000
262005-12-293.097000
272014-12-290.262000
282020-12-290.010000
292021-09-280.012000
302022-09-280.023000
312009-12-300.008000
322015-12-290.031000
332021-12-290.020000
342023-12-270.020000
352020-06-260.015000
362020-09-280.013000
372026-03-270.003000
382008-12-300.011000
392019-12-270.066000