f/overrides/event-backup/jaigx-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
22023-12-140.232000
32024-12-120.401000
42003-12-300.057000
52005-12-290.136000
62007-12-270.153000
72012-12-070.091000
82022-12-080.362000
92014-06-195.311000
102021-06-100.225000
112024-06-130.224000
121997-12-300.020000
132006-12-280.233000
142007-06-280.219000
152009-06-191.160000
162010-06-290.219000
172022-06-150.321000
182016-12-120.123000
192017-12-110.106000
201996-06-270.030000
212004-06-290.144000
222004-12-300.077000
232013-12-090.171000
242015-12-070.100000
252025-12-110.299000
261998-06-290.120000
272010-12-100.132000
282019-06-100.333000
292019-12-090.242000
302021-12-090.261000
312009-12-110.087000
322012-06-274.477000
332015-06-191.032000
341995-12-280.020000
351996-12-300.040000
361997-06-270.088000
372006-06-290.623000
382008-06-279.685000
392018-06-220.390000
402020-12-100.224000
412003-06-270.177000
422013-06-261.075000
432017-06-280.382000
442023-06-210.393000
452026-06-160.271000
462025-06-120.428000
472005-06-290.225000
482011-06-290.721000
492016-06-211.914000
502018-12-100.164000
512020-06-110.206000