f/overrides/event-backup/ipoyx-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

375 B

1DateDividends
22018-12-130.124000
32020-12-100.217000
42023-12-150.573000
52012-12-130.125000
62014-12-110.128000
72017-12-140.012000
82019-12-120.172000
92024-12-130.627000
102025-12-122.119000
112006-12-140.658000
122011-12-080.642000
132013-12-120.109000
142015-12-100.284000
152021-12-160.149000
162022-12-152.447000
172005-12-150.174000
182007-12-132.125000
192008-12-111.855000