f/overrides/event-backup/mvcax-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

495 B

1DateDividends
22016-12-200.251000
32022-12-081.423000
42006-12-180.458000
52010-12-160.076000
62013-12-171.029000
72014-12-181.317000
82018-12-131.231000
92021-12-091.797000
102023-12-120.815000
112025-12-092.468000
122004-12-161.229000
132005-12-151.592000
142008-12-180.095000
152011-12-150.070000
162012-12-180.133000
172015-12-170.852000
182017-12-190.781000
192024-12-103.370000
202003-01-310.038000
212007-12-201.355000
222019-12-120.504000
232020-12-100.205000
242003-02-280.038000
252009-12-170.055000