f/overrides/event-backup/ddwm-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

855 B

1DateDividends
22022-03-250.190000
32023-06-260.575000
42024-06-250.545000
52025-12-260.191000
62016-12-230.070000
72017-03-270.215000
82019-06-240.465000
92024-12-310.011000
102026-06-250.660000
112020-06-230.280000
122021-12-270.232000
132022-06-240.620000
142022-09-260.270000
152022-12-230.171000
162023-09-250.330000
172023-12-220.255000
182025-06-250.555000
192017-06-260.375000
202020-03-240.062000
212021-09-240.480000
222025-09-250.215000
232021-03-250.062000
242025-03-260.115000
252026-03-260.115000
262021-06-240.375000
272016-06-200.275000
282017-09-260.090000
292020-12-210.313000
302019-03-260.175000
312019-09-240.190000
322024-03-220.195000
332017-12-260.129000
342018-06-250.794000
352018-09-250.148000
362016-09-260.165000
372020-09-220.325000
382023-03-270.275000
392024-09-250.200000
402024-12-260.276000
412016-12-050.441000
422018-12-240.197000
432019-12-230.270000