f/overrides/event-backup/dhlrx-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

853 B

1DateDividendsctime
22013-12-300.2172019-09-23 16:03:33
32014-12-300.242019-09-23 16:03:33
42015-12-300.2412019-09-23 16:03:33
52017-12-280.2842019-09-23 16:03:33
62016-12-290.3062019-09-23 16:03:33
72018-12-280.3382019-09-23 16:03:33
82008-12-160.1022019-09-23 16:03:33
92008-12-310.1872019-09-23 16:03:33
102009-12-300.0622019-09-23 16:03:33
112010-12-300.1572019-09-23 16:03:33
122011-12-290.1972019-09-23 16:03:33
132012-12-280.292019-09-23 16:03:33
142006-12-120.1162019-09-23 16:03:33
152007-12-120.8212019-09-23 16:03:33
162013-12-170.8572019-09-23 16:03:33
172014-12-170.812019-09-23 16:03:33
182015-12-170.852019-09-23 16:03:33
192016-12-151.2122019-09-23 16:03:33
202017-12-140.9952019-09-23 16:03:33
212018-12-130.7192019-09-23 16:03:33
222006-12-290.1962019-09-23 16:03:33
232007-12-280.272019-09-23 16:03:33