f/overrides/event-backup/mvgax-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

1015 B

1DateDividends
22019-12-190.183000
32021-12-161.310000
42023-09-210.030000
52023-12-140.128000
62024-06-250.076000
72025-09-250.042000
82015-12-100.033000
92016-09-270.025000
102018-09-260.072000
112020-06-250.064000
122022-09-220.046000
132025-06-260.125000
142026-03-260.031000
152026-06-250.080000
162015-06-250.069000
172014-09-250.007000
182019-06-260.079000
192021-09-230.040000
202022-03-240.023000
212023-03-230.038000
222024-09-260.043000
232024-12-121.102000
242014-06-260.051000
252017-12-210.094000
262018-12-200.421000
272019-09-260.064000
282016-12-130.040000
292020-09-240.069000
302025-12-111.689000
312017-09-270.054000
322016-06-280.057000
332017-06-280.039000
342020-03-260.053000
352021-06-240.073000
362023-06-220.064000
372025-03-250.029000
382015-03-260.038000
392015-09-280.042000
402017-03-290.047000
412021-03-250.050000
422022-06-230.073000
432022-12-150.384000
442014-03-270.039000
452016-03-290.038000
462018-03-270.021000
472018-06-270.073000
482019-03-270.049000
492020-12-170.015000
502024-03-260.031000
512014-12-110.023000