f/overrides/event-backup/ftxh-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
22018-12-180.037000
32019-03-210.026000
42019-09-250.050000
52024-09-260.122000
62024-03-210.068000
72018-06-210.035000
82021-12-230.110000
92025-12-120.129000
102018-03-220.078000
112020-06-250.046000
122021-06-240.053000
132022-06-240.038000
142025-03-270.099000
152025-09-250.145000
162016-12-210.034000
172017-03-230.031000
182019-06-140.040000
192019-12-130.041000
202021-03-250.077000
212026-03-260.057000
222017-09-210.380000
232020-12-240.064000
242022-03-250.049000
252022-09-230.091000
262025-06-260.089000
272023-06-270.118000
282023-12-220.123000
292017-06-220.055000
302018-09-140.026000
312020-09-240.043000
322021-09-230.039000
332022-12-230.125000
342026-06-250.092000
352020-03-260.059000
362023-03-240.100000
372023-09-220.073000
382024-06-270.128000
392024-12-130.130000