f/overrides/event-backup/agizx-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

1.1 KiB

1DateDividends
22023-06-080.253000
32024-12-120.395000
42019-09-110.197000
52022-12-150.289000
62023-12-140.332000
72017-03-140.120000
82021-06-090.191000
92016-09-130.130000
102017-06-130.130000
112020-09-090.180000
122017-09-120.147000
132020-06-100.210000
142024-06-060.235000
152014-03-180.190000
162015-09-150.130000
172019-06-120.203000
182022-09-080.210000
192013-06-180.110000
202017-12-150.827000
212019-12-181.843000
222021-09-080.180000
232025-09-110.235000
242014-09-160.140000
252014-12-181.277000
262013-12-180.225000
272022-06-090.183000
282016-12-140.223000
292018-06-130.200000
302013-09-170.110000
312018-03-140.130000
322019-03-130.135000
332020-12-160.876000
342025-03-130.209000
352012-09-180.110000
362012-12-180.194000
372021-03-100.141000
382023-03-090.180000
392023-09-070.244000
402024-03-070.173000
412024-09-050.253000
422015-03-170.130000
432020-03-110.165000
442015-12-161.226000
452021-12-152.268000
462026-03-120.208000
472013-03-190.110000
482014-06-170.140000
492018-12-182.083000
502025-06-120.273000
512026-06-110.198000
522015-06-160.130000
532016-03-150.130000
542018-09-120.185000
552022-03-100.150000
562025-12-170.366000
572012-06-190.110000
582016-06-140.140000