f/overrides/event-backup/abbv-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

1.1 KiB

1DateDividends
22016-01-130.570000
32017-04-110.640000
42021-01-141.300000
52024-10-151.550000
62015-10-130.510000
72016-07-130.570000
82021-10-141.300000
92026-04-151.730000
102022-07-141.410000
112023-01-121.480000
122023-10-121.480000
132025-07-151.640000
142014-04-110.420000
152018-10-120.960000
162019-07-121.070000
172022-04-131.410000
182022-10-131.410000
192024-07-151.550000
202018-04-120.960000
212020-10-141.180000
222013-01-110.400000
232014-10-100.420000
242016-04-130.570000
252019-01-141.070000
262014-01-130.400000
272017-07-120.640000
282018-07-120.960000
292026-01-161.730000
302023-07-131.480000
312013-10-100.400000
322017-10-120.640000
332021-07-141.300000
342022-01-131.410000
352025-10-151.640000
362016-10-120.570000
372019-10-111.070000
382020-01-141.180000
392024-04-121.550000
402013-04-110.400000
412013-07-110.400000
422025-04-151.640000
432014-07-110.420000
442015-07-130.510000
452018-01-110.710000
462025-01-151.640000
472019-04-121.070000
482020-04-141.180000
492015-01-130.490000
502024-01-121.550000
512017-01-110.640000
522020-07-141.180000
532026-07-151.730000
542015-04-130.510000
552021-04-141.300000
562023-04-131.480000