f/overrides/event-backup/aaavx-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

495 B

1DateDividends
22021-12-170.186000
32022-12-190.170000
42024-12-180.268000
52018-12-190.076000
62019-06-210.141000
72021-06-230.155000
82022-06-230.336000
92023-12-190.212000
102025-12-170.266000
112026-06-230.634000
122020-06-230.068000
132020-12-170.105000
142016-12-190.037000
152017-06-230.103000
162018-06-220.091000
172023-06-230.059000
182024-06-210.062000
192014-12-300.243000
202015-06-230.063000
212017-12-190.068000
222019-12-180.078000
232025-06-230.297000
242015-12-300.144000
252016-06-230.114000