f/overrides/event-backup/mfcpx-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
21997-08-260.002000
32009-12-290.006000
42019-12-271.989000
52021-12-295.236000
62025-12-304.531000
72000-12-284.932000
82009-06-250.001000
92015-06-180.463000
102017-06-190.544000
112020-06-150.316000
121996-12-310.511000
131997-12-300.359000
142020-12-290.273000
152015-12-292.738000
162018-06-181.029000
172019-06-170.170000
181998-06-260.080000
192014-12-292.906000
202016-12-291.055000
212021-06-160.328000
222000-06-290.654000
232016-06-200.101000
242022-12-291.332000
252023-12-281.487000
262026-06-150.322000
271999-12-300.624000
282001-06-260.147000
292017-12-283.037000
302018-12-274.790000
312023-06-150.208000
322024-12-302.272000