f/overrides/event-backup/lmisx-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

555 B

1DateDividends
22022-12-150.157000
32021-07-120.673000
42019-06-200.049000
52021-06-170.041000
62023-12-150.434000
72008-12-290.056000
82011-12-280.168000
92015-12-090.973000
102019-12-181.453000
112024-12-170.934000
122014-12-100.817000
132018-12-192.496000
142023-06-151.063000
152012-12-120.173000
162017-12-201.268000
172020-12-220.586000
182009-12-290.099000
192025-06-130.199000
202026-06-120.654000
212013-12-110.478000
222018-06-190.142000
232020-06-180.126000
242024-06-130.032000
252025-12-160.933000
262010-12-290.132000
272016-12-210.238000
282021-12-224.650000