f/overrides/event-backup/dscpx-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

635 B

1DateDividends
22019-12-050.205000
32019-12-270.033000
42024-09-160.026000
52022-06-150.940000
62023-09-150.026000
72023-12-040.201000
82024-06-140.354000
92025-09-150.017000
102017-12-040.203000
112020-06-150.019000
122020-06-260.044000
132026-06-150.542000
142018-06-150.144000
152018-12-060.117000
162023-06-150.445000
172025-12-260.049000
182015-06-150.010000
192020-12-040.851000
202024-12-260.073000
212022-12-270.029000
222025-06-160.008000
232021-06-151.179000
242021-12-031.525000
252023-12-260.034000
262019-06-140.083000
272021-12-280.133000
282024-03-150.025000
292026-03-160.010000
302017-06-150.154000
312020-12-280.176000
322023-03-150.099000