f/overrides/event-backup/ftxo-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

795 B

1DateDividends
22024-06-270.222000
32026-03-260.074000
42017-12-210.122000
52018-06-210.089000
62020-06-250.206000
72021-12-230.184000
82022-12-230.242000
92024-12-130.186000
102026-06-250.257000
112017-09-210.104000
122019-03-210.098000
132020-03-260.118000
142021-09-230.149000
152025-03-270.121000
162017-03-230.008000
172017-06-220.087000
182023-06-270.251000
192024-03-210.107000
202019-12-130.225000
212021-06-240.145000
222022-03-250.127000
232025-06-260.208000
242025-12-120.228000
252019-06-140.191000
262020-09-240.152000
272020-12-240.176000
282023-12-220.236000
292018-03-220.090000
302022-06-240.196000
312022-09-230.205000
322024-09-260.180000
332018-09-140.127000
342018-12-180.478000
352023-03-240.144000
362025-09-250.169000
372016-12-210.043000
382019-09-250.201000
392021-03-250.060000
402023-09-220.177000