f/overrides/event-backup/fval-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

815 B

1DateDividends
22021-03-190.159000
32021-06-180.158000
42021-12-170.216000
52022-06-170.193000
62023-06-160.207000
72023-12-150.247000
82019-03-150.163000
92020-12-180.136000
102022-03-180.199000
112024-12-200.238000
122022-09-160.218000
132024-03-150.249000
142026-03-200.301000
152026-06-180.297000
162017-12-150.143000
172020-03-200.181000
182021-09-170.200000
192022-12-160.175000
202023-09-150.200000
212024-06-210.248000
222025-12-190.377000
232016-12-160.120000
242017-09-150.147000
252025-03-210.278000
262025-09-190.278000
272019-06-210.172000
282020-09-180.162000
292019-09-200.172000
302020-06-190.174000
312023-03-170.242000
322025-06-200.232000
332016-12-280.004000
342018-06-150.149000
352018-09-210.148000
362024-09-200.247000
372017-03-170.108000
382017-06-160.133000
392019-12-200.166000
402018-03-160.137000
412018-12-210.179000