f/overrides/event-backup/iglgx-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

695 B

1DateDividends
22015-06-180.001000
32017-12-150.055000
41990-12-280.083000
52006-12-200.063000
62009-12-210.023000
72021-12-161.788000
82003-12-220.001000
92004-12-200.034000
102005-12-200.017000
112010-09-220.002000
122014-12-180.025000
132025-12-151.846000
141997-12-290.237000
151998-12-230.416000
162009-08-120.036000
172010-12-200.022000
182011-12-200.018000
192024-12-161.227000
201992-12-300.036000
212013-12-190.034000
222018-12-171.280000
232020-12-151.484000
241996-12-300.640000
252008-12-190.042000
261999-12-231.000000
272007-12-190.038000
282012-12-200.095000
292019-12-160.446000
302023-12-150.744000
311991-12-300.035000
321993-12-300.023000
331994-12-300.045000
341995-12-290.130000
352000-12-211.364000