f/overrides/event-backup/fisvx-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

295 B

1DateDividends
22020-12-290.005000
32020-12-180.175000
42021-08-062.116000
52021-12-170.360000
62022-12-160.274000
72023-08-110.222000
82024-08-090.166000
92019-12-200.134000
102020-08-070.117000
112025-08-080.299000
122024-12-200.268000
132025-12-190.316000
142022-08-050.517000
152023-12-150.275000