f/overrides/event-backup/gulf-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

890 B

1DateDividendsctime
22017-03-270.12017-08-24 15:39:34
32009-06-220.6182017-08-24 15:39:34
42009-12-210.042017-08-24 15:39:34
52010-03-290.0412017-08-24 15:39:34
62012-03-260.162017-08-24 15:39:34
72014-03-240.3692017-08-24 15:39:34
82015-03-230.1152017-08-24 15:39:34
92017-06-260.2352017-08-24 15:39:34
102010-09-200.0212017-08-24 15:39:34
112010-06-280.4042017-08-24 15:39:34
122012-06-250.52017-08-24 15:39:34
132013-06-240.3482017-08-24 15:39:34
142014-06-230.1672017-08-24 15:39:34
152015-06-220.6252017-08-24 15:39:34
162015-12-210.0342017-08-24 15:39:34
172013-03-220.2142017-08-24 15:39:34
182016-12-230.0052017-08-24 15:39:34
192014-09-220.0982017-08-24 15:39:34
202011-06-220.7652017-08-24 15:39:34
212010-12-220.0222017-08-24 15:39:34
222014-12-190.3572017-08-24 15:39:34
232011-03-210.0582017-08-24 15:39:34
242016-06-200.6652017-08-24 15:39:34