f/overrides/event-backup/mgrax-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

575 B

1DateDividends
22000-12-181.393000
31998-12-170.428000
42011-12-150.193000
52025-12-162.525000
62006-12-182.148000
72013-12-120.310000
82016-12-150.264000
91995-12-280.004000
102010-12-160.190000
112008-12-160.649000
122014-12-160.590000
132017-12-140.762000
142020-12-100.238000
152021-12-092.878000
162023-12-191.025000
172005-12-150.425000
181997-12-230.289000
192003-01-310.034000
202018-12-131.130000
211996-12-230.146000
222009-12-170.180000
232019-12-120.526000
242024-12-172.468000
252003-02-280.034000
262012-12-130.321000
272015-12-150.273000
282022-12-080.964000
292007-12-132.473000