f/overrides/event-backup/ntdix-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
22012-12-210.190000
32019-12-231.303000
42014-06-170.044000
52021-12-231.260000
62025-06-120.057000
72015-06-160.069000
82019-09-120.051000
92021-09-090.024000
102013-12-200.304000
112014-03-180.026000
122017-09-140.042000
132025-12-231.408000
142023-06-150.050000
152014-09-180.044000
162015-03-170.025000
172015-09-150.037000
182016-12-190.766000
192018-03-130.022000
202014-12-190.625000
212016-09-150.027000
222018-09-120.045000
232026-06-240.051000
242022-06-090.039000
252022-12-230.280000
262023-12-220.618000
272015-12-210.594000
282019-06-110.071000
292024-06-130.042000
302024-09-120.037000
312019-03-120.020000
322012-06-190.047000
332013-03-190.025000
342016-06-140.067000
352017-06-130.071000
362013-06-250.031000
372016-03-150.021000
382022-09-150.019000
392024-12-232.003000
402020-09-100.537000
412012-09-110.031000
422017-03-140.011000
432011-03-220.018000
442011-12-210.125000
452020-12-230.418000
462026-03-250.012000
472013-09-260.025000
482023-09-140.002000
492011-09-200.029000
502018-06-120.081000
512018-12-201.032000
522017-12-200.539000
532025-09-110.036000
542011-06-210.035000