f/overrides/event-backup/bnglx-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

555 B

1DateDividends
22001-12-171.004000
32006-12-211.069000
42008-12-181.401000
52010-12-170.437000
62012-12-170.224000
72024-12-170.207000
82005-12-210.742000
92009-12-180.632000
102020-12-180.222000
112000-12-120.635000
122013-12-170.130000
132015-12-160.274000
142022-12-190.478000
152017-12-190.171000
162021-12-202.413000
171999-06-160.090000
182003-12-230.154000
192007-12-191.050000
201997-12-110.520000
211998-12-030.351000
222011-12-160.426000
232019-12-190.881000
242025-12-170.267000
251998-06-160.107000
262004-12-220.510000
272016-12-200.228000
282023-12-180.233000