f/overrides/event-backup/aedax-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

495 B

1DateDividends
22007-12-143.967000
32012-12-071.206000
42017-12-130.767000
52018-12-140.472000
62020-12-150.514000
72022-12-162.239000
82024-12-163.310000
92025-12-185.614000
101998-12-160.013000
112013-12-131.191000
122006-12-152.686000
132008-12-122.164000
142010-12-100.366000
152011-12-090.949000
162014-12-122.249000
172015-12-111.653000
182003-11-250.007000
192004-12-170.033000
202016-12-130.528000
212019-12-131.015000
222021-12-163.865000
232023-12-150.901000
242005-12-162.294000
252009-12-110.368000