f/overrides/event-backup/lafax-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
22019-12-172.321000
32021-12-201.540000
42005-06-070.237000
52009-06-100.149000
62010-06-090.303000
72011-12-070.664000
82014-12-092.881000
92025-12-171.066000
102007-12-111.811000
112012-06-060.120000
122012-12-063.837000
132014-06-040.112000
142016-12-070.160000
152018-12-181.855000
162007-06-050.075000
172013-06-050.530000
182013-12-111.753000
192020-06-100.092000
202025-06-100.737000
212008-06-110.543000
222011-06-080.316000
232015-06-030.098000
242001-06-120.090000
252017-12-180.011000
262015-12-090.333000
272019-06-120.301000
282006-06-060.003000
292021-06-100.148000
302022-06-080.924000
312024-06-120.238000
322004-06-020.028000