f/overrides/event-backup/airr-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

755 B

1DateDividends
22018-09-140.020000
32020-12-240.019000
42023-06-270.041000
52016-09-210.011000
62017-06-220.020000
72021-06-240.002000
82024-12-130.056000
92026-03-260.067000
102019-09-250.009000
112022-06-240.006000
122024-06-270.033000
132020-09-240.016000
142021-12-230.018000
152025-12-120.028000
162014-09-230.007000
172015-09-230.019000
182018-12-180.047000
192018-06-210.020000
202022-12-230.049000
212024-03-210.010000
222024-09-260.042000
232014-12-230.030000
242015-06-240.014000
252016-12-210.008000
262019-12-130.050000
272025-06-260.066000
282025-09-250.014000
292017-12-210.030000
302018-03-220.006000
312023-03-240.029000
322021-03-250.003000
332023-09-220.019000
342023-12-220.045000
352025-03-270.075000
362015-12-230.045000
372017-03-230.004000
382017-09-210.028000