f/overrides/event-backup/mgiax-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

655 B

1DateDividends
22008-12-162.067000
32015-12-151.058000
42019-12-121.766000
52020-12-102.743000
62002-02-040.096000
72005-12-152.039000
82014-12-161.080000
92021-12-094.022000
102022-12-085.179000
111996-12-230.117000
122006-12-182.660000
132016-12-150.565000
142000-12-181.093000
152010-04-300.062000
162007-12-132.521000
172009-12-170.206000
182010-12-160.277000
191997-12-230.711000
202004-12-160.613000
212023-12-194.411000
221998-12-170.337000
232013-12-270.047000
242013-12-120.646000
252017-12-141.071000
262024-12-174.552000
272025-12-163.612000
281995-12-280.025000
291999-12-170.920000
302012-12-130.461000
312018-12-131.659000
322003-12-170.059000
332011-12-150.347000