f/overrides/event-backup/jmvyx-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

516 B

1DateDividends
22020-12-112.404000
32020-12-180.459000
42022-12-133.593000
52016-12-142.245000
62017-12-130.723000
72018-12-190.579000
82019-02-070.012000
92019-12-121.548000
102023-12-200.512000
112019-03-070.057000
122019-04-090.020000
132019-12-190.525000
142024-12-190.426000
152016-12-200.333000
162019-01-090.016000
172019-05-090.013000
182022-12-200.469000
192025-12-180.402000
202024-12-124.080000
212025-12-116.391000
222017-12-200.368000
232018-12-122.159000
242021-12-1311.794000
252021-12-200.351000
262023-12-131.715000