f/overrides/event-backup/mxugx-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

635 B

1DateDividends
22015-06-190.163000
32015-09-040.057000
42015-12-290.235000
52019-06-240.247000
62021-09-030.045000
72022-12-280.195000
82023-06-230.198000
92018-09-070.007000
102020-09-040.047000
112022-09-060.018000
122016-12-280.219000
132020-06-240.217000
142024-09-060.007000
152017-09-060.002000
162017-12-270.136000
172018-12-270.289000
182019-12-270.042000
192020-12-290.347000
202021-06-230.175000
212021-12-290.436000
222016-09-070.004000
232017-06-230.206000
242025-12-290.480000
252018-06-220.206000
262022-06-230.174000
272025-09-050.020000
282016-06-240.250000
292019-09-060.007000
302023-09-060.012000
312023-12-270.264000
322024-12-270.527000