f/overrides/event-backup/fcnkx-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

735 B

1DateDividends
22009-12-180.026600
32011-02-040.008500
42014-02-070.097000
52022-12-091.231000
62021-02-120.400000
72024-12-060.880000
82025-02-070.175000
92009-02-130.001500
102012-12-140.093100
112015-12-110.441500
122018-12-070.821000
132020-12-111.246000
142010-02-050.009000
152015-02-060.095000
162021-12-101.625000
172023-02-100.186000
182025-12-051.090000
192017-12-080.698300
202019-02-080.106000
212019-12-130.464000
222008-12-260.028200
232018-02-090.185800
242026-02-060.042000
252010-12-170.039400
262016-12-090.321600
272017-02-100.067600
282022-02-040.215000
292023-12-080.510000
302011-12-280.000400
312020-02-070.097000
322024-02-160.024000
332011-12-160.019400
342013-02-080.074500
352013-12-130.681400
362014-12-120.627600
372016-02-050.063700