f/overrides/event-backup/fdem-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

655 B

1DateDividends
22025-09-190.277000
32021-03-190.088000
42021-06-180.268000
52022-06-170.374000
62023-03-170.114000
72023-12-150.119000
82024-03-150.119000
92019-06-210.225000
102020-06-190.187000
112022-12-160.124000
122024-06-210.355000
132025-03-210.152000
142025-06-200.343000
152020-03-200.105000
162021-12-170.158000
172023-12-280.016000
182022-09-160.248000
192025-12-190.225000
202019-03-150.025000
212024-12-200.308000
222019-09-200.226000
232020-12-180.102000
242023-06-160.390000
252020-09-180.107000
262021-09-170.175000
272024-09-200.241000
282026-06-180.404000
292019-12-200.138000
302021-12-300.007000
312022-03-180.102000
322023-09-150.420000
332026-03-200.157000