f/overrides/event-backup/fdvax-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

555 B

1DateDividends
22006-12-081.801000
32008-12-050.449000
42010-12-030.175000
52015-12-040.127000
62017-12-080.231000
72010-12-300.058000
82011-12-020.194000
92016-12-090.233000
102018-12-070.908000
112003-12-120.120000
122014-12-260.022000
132019-12-060.328000
142000-12-080.290000
152002-12-060.060000
162004-12-100.130000
172021-12-033.158000
182023-12-081.011000
191999-12-030.030000
202005-12-091.094000
212012-12-070.270000
222013-12-060.349000
232022-12-090.420000
242024-12-131.549000
252007-12-073.259000
262009-12-040.203000
272014-12-050.200000
282025-12-123.862000