f/overrides/event-backup/cspyx-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

395 B

1DateDividends
22025-06-130.854000
32025-12-101.763000
42026-06-221.652000
52017-06-200.363000
62022-06-220.740000
72022-12-121.668000
82021-06-140.643000
92023-06-220.457000
102024-12-112.704000
112018-06-190.439000
122020-06-190.276000
132023-12-120.871000
142019-12-120.972000
152020-12-100.504000
162021-12-101.788000
172024-06-140.921000
182017-12-061.515000
192018-12-061.963000
202019-06-180.531000