f/overrides/event-backup/bheix-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

1.5 KiB

1DateDividends
22023-02-280.157000
32023-03-310.175000
42023-10-310.127000
52026-01-300.183000
62021-07-150.080000
72022-04-290.129000
82022-09-300.162000
92026-02-270.206000
102024-06-280.203000
112024-10-310.183000
122025-09-300.188000
132021-01-290.118000
142022-06-300.154000
152023-12-290.147000
162022-05-310.227000
172023-07-310.139000
182025-01-310.179000
192025-02-280.189000
202021-02-260.171000
212021-05-280.194000
222021-09-300.169000
232022-03-310.163000
242024-07-310.168000
252020-07-310.111000
262021-07-300.140000
272022-02-280.170000
282022-07-140.013000
292024-02-290.166000
302024-08-300.192000
312020-09-300.162000
322020-10-300.128000
332021-12-070.075000
342024-12-310.189000
352026-03-310.226000
362026-05-290.218000
372020-08-310.153000
382022-08-310.165000
392022-10-310.126000
402021-10-290.156000
412024-03-280.177000
422026-06-300.216000
432026-07-310.196000
442021-04-300.179000
452022-07-290.139000
462023-01-310.133000
472025-05-300.196000
482021-12-310.193000
492023-05-310.177000
502023-09-290.163000
512020-11-300.129000
522023-04-280.156000
532025-03-310.210000
542026-04-300.197000
552022-01-310.134000
562022-11-300.167000
572025-11-280.216000
582025-06-300.210000
592025-07-310.174000
602020-12-310.159000
612022-12-300.166000
622025-04-300.203000
632023-06-300.164000
642023-11-300.175000
652024-05-310.186000
662025-12-310.224000
672021-08-310.164000
682021-11-300.165000
692022-01-030.132000
702024-09-300.212000
712023-08-310.182000
722024-01-310.132000
732024-04-300.146000
742022-12-080.049000
752024-11-290.196000
762025-10-310.196000