f/overrides/event-backup/lswwx-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

675 B

1DateDividends
22005-12-290.164000
32010-12-290.281000
42024-12-181.852000
52000-12-120.345000
62001-12-110.747000
72002-12-100.265000
82017-12-270.526000
92003-12-090.342000
102006-12-220.268000
112008-12-080.287000
122025-12-182.009000
132021-12-222.186000
141996-12-300.295000
151997-07-070.018000
162010-04-300.032000
172018-12-210.965000
181998-12-150.443000
192009-12-090.327000
202014-12-231.215000
212015-12-281.041000
222016-12-270.285000
232023-12-200.940000
241997-12-290.451000
251999-12-140.477000
262004-12-160.272000
272007-12-100.551000
282011-12-280.265000
292019-12-230.726000
302022-12-222.032000
312007-12-110.440000
322012-12-260.310000
332013-12-230.610000
342020-12-211.669000