f/overrides/event-backup/mxhrx-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
22015-12-300.375000
32018-12-280.443000
42019-09-100.655000
52020-06-260.049000
62020-12-300.419000
72016-06-280.083000
82017-06-270.060000
92017-12-280.375000
102018-09-110.395000
112021-12-300.592000
122024-09-100.215000
132024-12-300.235000
142015-06-240.058000
152018-06-270.063000
162021-06-250.037000
172023-09-080.202000
182017-09-080.150000
192022-09-080.441000
202022-12-290.183000
212023-06-270.053000
222020-09-080.206000
232025-12-300.218000
242016-09-090.302000
252016-12-290.237000
262019-06-260.062000
272019-12-300.182000
282021-09-070.206000
292025-09-090.244000
302022-06-270.042000
312023-12-280.142000