f/overrides/event-backup/epgax-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

595 B

1DateDividends
21997-12-190.011000
32000-12-220.340000
42008-12-300.000500
52016-01-080.009200
62017-01-130.011200
71999-01-080.067000
82011-12-160.010900
92015-12-040.228800
102023-12-260.096000
112024-12-262.483000
122016-12-270.572100
131998-12-180.635000
142002-06-280.004700
152002-10-310.005800
162004-01-300.005400
172008-12-190.006900
182010-12-170.005300
192021-12-282.217000
202025-12-260.139000
211996-12-200.036000
222000-01-070.044000
232017-12-261.337800
241999-12-170.522000
252001-01-050.005000
262019-12-271.183000
272018-12-260.720000
282002-07-310.005100
292020-12-291.911000
302022-12-270.287000