f/overrides/event-backup/mglax-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

475 B

1DateDividends
22018-12-180.416000
32023-12-140.270000
42024-12-120.370000
52025-12-110.477000
62021-12-140.415000
72022-12-130.876000
82012-12-180.817000
92013-09-250.118000
102014-12-180.665000
112015-07-310.234000
122016-12-201.404000
132017-12-190.642000
142020-12-150.136000
152010-06-240.859000
162011-05-310.241000
172011-12-150.496000
182013-05-310.201000
192013-12-170.676000
202015-12-170.848000
212009-12-175.071000
222010-12-161.543000
232012-05-310.206000
242019-12-170.971000