f/overrides/event-backup/ixj-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

955 B

1DateDividends
22004-12-230.182000
32006-12-210.243500
42009-12-210.154000
52018-06-190.518000
62026-06-150.846000
72001-12-240.007000
82003-12-160.031500
92016-12-220.362000
102018-12-280.332000
112020-06-150.534000
122009-06-220.358000
132010-12-200.201000
142014-06-240.492000
152017-06-200.494000
162019-06-170.497000
172019-12-160.479000
182021-06-100.533000
192022-12-130.440000
202012-06-200.473000
212012-12-170.262000
222013-12-170.197000
232010-06-210.369000
242013-06-250.452000
252015-06-240.420000
262015-12-290.102000
272018-12-180.347000
282023-06-070.644000
292023-12-200.556000
302024-06-110.672000
312005-12-230.184000
322008-12-220.165500
332024-12-170.617000
342025-06-160.763000
352008-06-230.343500
362014-12-190.193000
372015-12-210.940000
382003-12-220.151000
392007-12-240.502000
402002-12-230.123000
412011-06-210.397500
422017-12-210.330500
432020-12-140.439000
442021-12-130.482000
452022-06-090.551000
462025-12-160.598000
472011-12-190.211000
482016-06-210.457500