f/overrides/event-backup/mxkvx-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

615 B

1DateDividends
22019-09-100.265000
32021-09-070.091000
42022-12-290.189000
52023-06-270.093000
62025-09-090.010000
72015-12-300.290000
82018-12-280.257000
92024-09-100.100000
102022-06-270.069000
112025-12-300.283000
122016-09-090.098000
132019-06-260.104000
142020-12-300.057000
152021-06-250.060000
162017-06-270.099000
172017-09-080.081000
182020-09-080.097000
192023-09-080.098000
202018-09-110.124000
212019-12-300.149000
222022-09-080.238000
232015-06-240.094000
242016-12-290.134000
252017-12-280.212000
262018-06-270.106000
272016-06-280.108000
282020-06-260.080000
292021-12-300.340000
302023-12-280.155000
312024-12-300.264000