f/overrides/event-backup/mxerx-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
22023-12-270.270000
32024-09-060.145000
42017-12-271.185000
52019-12-270.754000
62020-09-040.181000
72020-12-290.646000
82022-09-060.225000
92017-06-230.064000
102019-06-240.068000
112023-06-230.070000
122015-09-040.189000
132019-09-060.087000
142023-09-060.145000
152016-06-240.070000
162016-12-280.654000
172018-09-070.247000
182018-12-271.331000
192021-06-230.058000
202022-06-230.054000
212021-09-030.240000
222024-12-270.506000
232017-09-060.171000
242018-06-220.076000
252025-12-290.847000
262025-09-050.260000
272015-06-190.053000
282015-12-290.952000
292016-09-070.117000
302020-06-240.063000
312021-12-291.389000
322022-12-280.545000