f/overrides/event-backup/fdrr-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

775 B

1DateDividends
22021-03-190.236000
32021-09-170.265000
42021-12-170.202000
52017-03-170.199000
62017-06-160.220000
72017-12-150.253000
82020-03-200.413000
92020-12-180.185000
102023-03-170.369000
112023-12-150.274000
122024-12-200.467000
132019-09-200.300000
142023-09-150.277000
152025-09-190.318000
162019-03-150.307000
172019-12-200.090000
182023-06-160.366000
192025-06-200.401000
202018-06-150.238000
212019-06-210.323000
222024-06-210.302000
232025-12-190.329000
242026-03-200.350000
252021-06-180.245000
262022-03-180.301000
272022-09-160.293000
282022-12-160.191000
292024-03-150.292000
302017-09-150.214000
312018-09-210.248000
322018-12-210.214000
332024-09-200.280000
342026-06-180.410000
352016-12-160.161000
362018-03-160.219000
372020-06-190.234000
382020-09-180.218000
392025-03-210.299000