f/overrides/event-backup/fmag-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

375 B

1DateDividends
22022-12-160.018000
32023-12-150.027000
42024-03-150.005000
52024-09-200.012000
62022-06-170.011000
72023-03-170.023000
82024-06-210.007000
92023-09-150.012000
102025-09-190.030000
112021-09-170.001000
122022-03-180.001000
132022-09-160.013000
142023-06-160.011000
152023-12-280.010000
162024-12-200.021000
172021-03-190.004000
182021-06-180.001000
192021-12-170.002000