f/overrides/event-backup/fmdrx-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
22015-09-040.400000
32017-09-010.521000
42017-12-221.288000
52020-12-180.837000
62022-10-030.932000
72023-12-202.148000
82024-10-010.284000
92014-12-192.050000
102018-12-212.020000
112023-10-020.051000
122025-10-010.641000
132015-12-182.448000
142019-10-040.689000
152019-12-201.593000
162022-12-151.300000
172024-12-203.041000
182025-12-222.769000
192014-09-050.198000
202016-09-020.483000
212016-12-221.534000
222018-10-050.030000
232020-10-020.203000
242021-10-010.265000
252021-12-172.529000
262022-12-200.592000