f/overrides/event-backup/adiv-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

435 B

1DateDividends
22023-03-310.030000
32024-06-280.120000
42024-12-130.430000
52021-12-031.780000
62022-09-300.120000
72022-12-020.120000
82023-12-080.288000
92025-03-280.100000
102021-06-250.230000
112022-06-240.120000
122023-06-300.120000
132025-09-260.120000
142022-03-250.030000
152023-09-290.200000
162024-09-270.130000
172025-12-120.151000
182026-03-200.140000
192026-06-180.150000
202021-09-240.270000
212024-03-280.060000
222025-06-270.130000