f/overrides/event-backup/fzanx-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

535 B

1DateDividends
22013-12-133.653000
32015-02-130.154000
42018-02-090.684000
52023-02-030.397000
62026-02-060.164000
72022-12-093.417000
82024-02-090.191000
92025-02-070.539000
102015-12-111.104000
112016-02-120.230000
122017-12-082.264000
132020-12-112.770000
142022-02-040.535000
152025-12-054.122000
162023-12-081.725000
172014-02-140.076000
182016-12-091.201000
192017-02-100.258000
202019-02-080.166000
212020-02-070.205000
222024-12-062.234000
232014-12-122.069000
242018-12-073.085000
252019-12-132.034000
262021-02-120.906000
272021-12-104.175000