f/overrides/event-backup/fcom-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

1015 B

1DateDividends
22013-12-200.064000
32015-03-200.217000
42016-12-280.007000
52023-03-170.080000
62026-06-180.175000
72022-09-160.088000
82022-12-160.083000
92023-06-160.063000
102015-12-180.055000
112016-09-160.227000
122017-06-160.288000
132018-06-150.212000
142021-09-170.121000
152025-12-190.156000
162025-03-210.138000
172025-09-190.197000
182026-03-200.174000
192014-09-190.190000
202017-03-170.220000
212018-12-210.118000
222021-06-180.088000
232024-06-210.115000
242017-12-151.486000
252018-09-210.215000
262020-03-200.089000
272023-09-150.097000
282019-09-200.072000
292020-06-190.081000
302024-12-200.133000
312021-03-190.077000
322022-03-180.065000
332022-06-170.087000
342014-06-200.117000
352015-09-180.271000
362016-12-160.162000
372018-03-160.248000
382020-12-180.068000
392023-12-150.104000
402024-09-200.155000
412025-06-200.152000
422014-12-190.167000
432017-09-150.337000
442019-06-210.077000
452020-09-180.073000
462024-03-150.108000
472014-03-210.242000
482015-06-190.237000
492016-06-170.218000
502019-03-150.076000
512019-12-200.081000