f/overrides/event-backup/dboax-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

655 B

1DateDividends
22021-03-290.125000
32022-03-290.228000
42008-12-310.382000
52020-12-160.859000
62023-12-141.044000
72025-12-181.966000
82007-12-313.531000
92010-12-310.237000
102023-03-280.151000
112004-12-300.305000
122014-12-311.900000
132024-03-260.038000
142026-03-270.339000
152006-06-290.004000
162010-04-290.042000
172011-12-300.234000
182016-12-300.233000
192019-12-310.713000
202009-12-310.255000
212012-12-310.234000
222015-12-311.165000
232017-12-291.135000
242018-12-311.886000
252021-12-152.960000
262005-12-300.445000
272019-03-200.061000
282020-03-250.105000
292024-12-171.388000
302006-12-290.323000
312013-12-310.464000
322022-12-140.913000
332025-03-270.068000