f/overrides/event-backup/mxqbx-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

615 B

1DateDividends
22021-12-300.880000
32022-09-080.626000
42024-09-100.301000
52017-06-270.117000
62017-09-080.305000
72019-06-260.119000
82025-09-090.277000
92015-06-240.104000
102020-09-080.361000
112022-12-290.297000
122023-06-270.130000
132015-12-300.374000
142016-12-290.354000
152018-09-110.423000
162018-12-280.596000
172019-12-300.280000
182021-06-250.090000
192021-09-070.526000
202018-06-270.127000
212023-09-080.233000
222019-09-100.750000
232023-12-280.295000
242024-12-300.418000
252022-06-270.111000
262025-12-300.387000
272016-06-280.108000
282016-09-090.025000
292017-12-280.527000
302020-06-260.088000
312020-12-300.264000