f/overrides/event-backup/esprx-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

515 B

1DateDividends
22025-12-152.617000
32025-12-220.423000
42019-02-280.013000
52019-03-290.013000
62019-12-100.307000
72021-12-160.287000
82022-12-091.907000
92022-12-150.415000
102016-12-140.300000
112018-12-102.063000
122019-04-300.013000
132019-12-170.439000
142023-12-150.523000
152015-12-110.420000
162017-12-131.538000
172017-12-150.490000
182024-12-200.540000
192023-12-110.492000
202024-12-123.566000
212015-12-160.330000
222016-12-090.568000
232018-12-140.303000
242020-12-090.011000
252020-12-160.254000
262021-12-092.596000