f/overrides/event-backup/fqal-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
22019-03-150.141000
32020-03-200.170000
42024-06-210.180000
52026-06-180.252000
62017-06-160.131000
72017-09-150.147000
82019-06-210.152000
92025-09-190.215000
102024-09-200.202000
112025-12-190.219000
122019-09-200.151000
132019-12-200.139000
142021-09-170.192000
152022-03-180.183000
162023-06-160.180000
172022-12-160.131000
182026-03-200.262000
192025-03-210.200000
202018-12-210.133000
212020-06-190.153000
222020-12-180.155000
232023-12-150.177000
242024-12-200.242000
252016-12-160.112000
262017-12-150.124000
272021-03-190.166000
282025-06-200.211000
292018-03-160.129000
302018-06-150.146000
312021-06-180.151000
322023-03-170.198000
332024-03-150.159000
342017-03-170.084000
352018-09-210.111000
362020-09-180.152000
372022-09-160.181000
382023-09-150.180000