f/overrides/event-backup/enor-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

555 B

1DateDividends
22018-12-180.144000
32022-12-130.301000
42023-12-200.417000
52026-06-151.561000
62016-06-220.417000
72020-06-150.291000
82015-12-210.200000
92017-12-190.185000
102013-12-180.134000
112019-12-160.132000
122020-12-140.308000
132023-06-070.816000
142025-12-160.278000
152015-06-250.412000
162016-12-210.227000
172019-06-170.659000
182021-06-100.407000
192017-06-200.453000
202018-06-190.499000
212024-06-110.875000
222021-12-130.244000
232022-06-090.687000
242014-06-250.882000
252024-12-170.543000
262025-06-160.572000
272012-06-210.646000
282014-12-170.171000