f/overrides/event-backup/iegax-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

515 B

1DateDividends
22007-12-145.789000
32015-12-111.265000
42016-12-131.340000
52017-12-131.222000
62003-12-120.019000
72006-12-154.166000
82013-12-131.398000
92014-12-121.822000
102005-12-140.810000
112009-12-110.167000
122018-12-140.586000
132019-12-130.780000
142020-12-150.206000
152022-12-160.543000
162024-12-160.609000
172025-12-182.952000
182004-12-170.229000
192008-12-121.031000
202010-12-100.147000
212011-12-090.242000
222012-12-070.043000
232021-12-160.893000
242023-12-150.459000
252001-12-140.034000
262005-12-160.845000