f/overrides/event-backup/fmtlx-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

875 B

1DateDividends
22019-06-260.231000
32022-09-300.049000
42023-06-300.079000
52024-06-170.007000
62014-12-300.634000
72019-03-270.007000
82019-09-260.052000
92023-03-310.091000
102018-09-260.118000
112021-06-280.337000
122021-12-302.298000
132022-06-300.055000
142017-03-290.087000
152018-03-270.022000
162020-09-280.054000
172021-09-280.059000
182014-06-260.223000
192015-12-300.460000
202016-06-280.179000
212016-12-290.127000
222022-06-150.349000
232025-06-160.525000
242025-12-300.683000
252024-03-280.054000
262015-03-270.008000
272019-12-300.271000
282022-12-290.042000
292023-12-280.108000
302018-12-280.489000
312023-06-150.037000
322024-09-300.072000
332020-12-300.192000
342021-03-290.005000
352023-09-290.072000
362024-06-280.079000
372015-06-260.227000
382017-12-280.230000
392018-06-270.158000
402020-03-270.023000
412026-06-150.451000
422016-03-290.004000
432020-06-260.335000
442024-12-300.243000