f/overrides/event-backup/banx-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

1.2 KiB

1DateDividends
22022-09-210.390000
32014-03-130.500000
42014-09-100.500000
52025-03-200.550000
62019-06-190.380000
72021-09-200.380000
82024-03-200.450000
92022-12-280.490000
102023-12-280.550000
112025-06-230.450000
122026-03-230.150000
132017-03-200.370000
142018-12-210.520000
152020-12-180.430000
162026-02-030.150000
172026-04-230.150000
182019-09-200.380000
192019-12-200.380000
202017-09-200.380000
212022-03-180.390000
222023-06-200.390000
232024-12-260.650000
242025-12-260.450000
252014-12-100.500000
262016-03-170.350000
272015-06-170.330000
282021-06-180.380000
292026-06-230.150000
302026-08-240.150000
312020-03-170.380000
322021-03-170.380000
332016-09-230.370000
342023-10-190.420000
352013-12-190.280000
362015-03-180.500000
372015-12-180.350000
382020-09-240.380000
392022-06-210.390000
402026-01-210.150000
412017-12-210.380000
422018-03-190.380000
432023-03-230.390000
442025-09-220.450000
452025-12-030.400000
462016-12-200.370000
472017-06-160.370000
482026-07-240.150000
492021-12-280.480000
502024-09-260.450000
512026-01-220.100000
522026-05-220.150000
532015-09-170.330000
542018-09-210.380000
552018-06-200.380000
562020-06-180.380000
572023-09-210.450000
582014-06-110.500000
592016-06-160.370000
602019-03-180.380000
612024-06-240.450000