f/overrides/event-backup/mitjx-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

575 B

1DateDividends
22013-05-310.072000
32017-12-192.042000
42019-06-280.396000
52023-12-213.499000
62022-07-290.918000
72013-12-170.584000
82014-05-300.252000
92019-12-172.189000
102020-12-151.444000
112021-06-300.475000
122022-12-132.195000
132025-07-310.888000
142023-07-310.376000
152026-07-310.515000
162014-12-181.770000
172016-06-300.228000
182016-12-201.579000
192018-06-290.175000
202020-06-300.220000
212012-12-180.728000
222024-12-194.848000
232025-12-184.327000
242015-06-300.202000
252015-12-171.534000
262018-12-183.634000
272021-12-143.269000
282024-07-310.467000
292017-06-300.398000