f/overrides/event-backup/asmdx-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

1.0 KiB

1DateDividends
22016-06-210.027000
32016-12-200.079000
42020-06-230.015000
52024-03-260.017000
62013-12-170.601000
72014-09-090.025000
82014-12-160.600000
92015-12-220.449000
102022-06-280.037000
112023-12-210.057000
122024-12-200.293000
132014-03-110.009000
142017-12-190.651000
152019-09-170.040000
162021-06-290.029000
172017-06-200.036000
182022-09-270.011000
192023-03-280.010000
202024-06-250.038000
212013-09-100.027000
222013-12-230.039000
232014-06-100.022000
242015-09-080.020000
252025-06-260.050000
262024-09-240.045000
272025-09-250.022000
282015-06-090.010000
292019-12-200.817000
302022-12-280.278000
312023-06-270.053000
322025-03-270.010000
332014-03-180.004000
342017-09-190.030000
352017-12-260.055000
362021-09-280.033000
372026-06-110.049000
382014-12-230.031000
392015-12-280.043000
402016-12-270.038000
412018-12-200.053000
422018-12-180.567000
432021-12-280.698000
442023-09-260.027000
452018-09-180.036000
462019-06-180.036000
472020-09-290.027000
482020-12-290.323000
492015-03-100.006000
502016-09-200.021000
512017-03-210.010000
522018-06-190.026000
532025-12-190.409000