f/overrides/event-backup/evsrx-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

455 B

1DateDividends
22019-12-170.419000
32020-12-091.436000
42023-12-150.228000
52024-12-200.228000
62015-12-111.439000
72017-12-130.586000
82018-12-140.276000
92021-12-160.249000
102017-12-150.225000
112018-12-100.853000
122020-12-160.416000
132022-12-092.238000
142024-12-121.396000
152025-12-220.209000
162015-12-160.263000
172016-12-090.209000
182019-12-100.438000
192023-12-111.609000
202025-12-151.340000
212016-12-140.213000
222021-12-091.740000
232022-12-150.248000