f/overrides/event-backup/dfiv-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

415 B

1DateDividends
22024-12-170.349000
32025-12-160.374000
42026-06-230.802000
52022-12-200.295000
62023-03-210.141000
72023-06-210.587000
82023-12-190.334000
92025-06-240.742000
102022-03-220.064000
112022-09-200.139000
122023-09-190.289000
132024-03-190.086000
142024-06-180.707000
152024-09-170.235000
162025-09-230.201000
172021-12-160.581000
182022-06-220.670000
192026-03-240.101000
202021-09-210.176000
212025-03-250.142000