f/overrides/event-backup/mxvhx-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
22019-12-270.300000
32021-06-230.070000
42023-06-230.099000
52018-06-220.121000
62019-06-240.120000
72021-12-290.747000
82017-09-060.184000
92018-09-070.174000
102022-09-060.119000
112023-12-270.651000
122024-09-060.036000
132015-06-190.104000
142016-09-070.162000
152016-12-280.651000
162024-12-271.374000
172025-12-290.681000
182020-12-290.376000
192022-12-280.785000
202019-09-060.085000
212020-09-040.069000
222025-09-050.068000
232019-10-230.663000
242021-09-030.085000
252016-06-240.130000
262017-12-270.991000
272018-12-271.075000
282017-06-230.124000
292023-09-060.058000
302022-06-230.096000
312015-09-040.078000
322015-12-290.910000
332020-06-240.078000