f/overrides/event-backup/jsml-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

815 B

1DateDividends
22019-03-290.022000
32019-09-300.024000
42021-12-200.089000
52023-06-300.063000
62023-09-290.057000
72024-09-300.055000
82025-09-300.090000
92017-12-220.073000
102026-06-300.046000
112022-09-300.040000
122023-12-200.132000
132022-06-300.059000
142020-03-310.033000
152022-03-310.013000
162024-03-280.053000
172024-06-280.051000
182025-03-310.268000
192025-06-300.207000
202017-06-300.007000
212020-06-300.016000
222020-09-300.017000
232019-06-280.041000
242017-09-290.046000
252018-09-280.020000
262020-12-210.126000
272021-03-310.064000
282017-03-310.027000
292018-03-290.071000
302021-09-300.125000
312016-12-230.139000
322019-12-190.039000
332023-03-310.038000
342024-12-200.623000
352025-12-190.124000
362018-12-200.110000
372018-06-290.069000
382021-06-300.019000
392022-12-200.195000
402026-03-310.042000
412016-06-300.015000