f/overrides/event-backup/ithvx-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

456 B

1DateDividends
22021-12-106.828000
32022-12-121.879000
42022-12-280.247000
52025-12-112.978000
62015-12-113.099000
72016-12-280.295000
82019-12-270.303000
92020-12-101.986000
102024-12-114.368000
112025-12-290.280000
122014-12-1212.565000
132017-12-155.321000
142017-12-270.397000
152018-12-270.229000
162019-12-101.643000
172024-12-270.371000
182014-12-300.279000
192018-12-175.614000
202020-12-290.284000
212021-12-290.194000
222023-12-270.338000
232015-12-290.241000