f/overrides/event-backup/mxi-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

815 B

1DateDividends
22011-06-210.708000
32015-12-210.626000
42016-12-220.255000
52017-06-200.760000
62018-06-190.857000
72020-12-140.587000
82024-12-171.356000
92010-06-210.483000
102012-06-200.698000
112006-12-210.163000
122010-12-200.721000
132016-06-210.465000
142023-12-201.162000
152008-06-230.552000
162011-12-190.559000
172014-12-190.526000
182015-06-241.013000
192017-12-210.470000
202019-12-160.713000
212025-06-160.189000
222026-06-151.125000
232009-06-220.239000
242014-06-240.774000
252018-12-180.730000
262019-06-171.681000
272020-06-150.398000
282023-06-071.387000
292012-12-170.609000
302013-06-250.834000
312022-12-131.540000
322008-12-220.493000
332009-12-210.217000
342021-12-132.066000
352025-12-160.708000
362007-12-240.482000
372019-12-300.063000
382021-06-101.107000
392022-06-092.264000
402024-06-111.163000
412013-12-170.498000