f/overrides/event-backup/atwax-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

475 B

1DateDividends
22007-12-170.548000
32008-12-160.117000
42009-12-150.143000
52012-12-130.072000
62016-12-120.431000
72018-12-170.731000
82010-12-140.124000
92017-12-262.051000
102019-12-160.776000
112022-12-120.902000
122003-12-230.005000
132004-12-210.010000
142011-12-150.148000
152015-12-101.101000
162020-12-140.185000
172021-12-131.167000
182023-12-110.307000
192024-12-160.495000
202005-12-220.157000
212006-12-190.121000
222013-12-120.316000
232014-12-110.391000
242025-12-161.073000