f/overrides/event-backup/eniax-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
22024-10-070.135000
32026-04-070.120000
42017-10-050.060000
52008-10-030.051000
62009-07-060.005000
72016-10-060.053000
82017-04-070.020000
92018-10-040.086000
102020-07-070.058000
112008-03-280.049000
122014-10-030.057000
132016-07-070.055000
142024-04-050.141000
152025-12-300.113000
162020-12-300.054000
172022-04-060.055000
182023-07-060.129000
192019-07-090.104000
202025-04-040.126000
212007-10-020.106000
222022-07-070.066000
232022-12-290.106000
242021-07-070.056000
252009-12-300.049000
262016-04-070.059000
272025-07-080.127000
282019-10-080.084000
292024-07-090.153000
302008-07-030.068000
312015-04-020.049000
322018-12-280.045000
332007-12-270.124000
342021-10-050.053000
352021-12-300.051000
362025-10-060.113000
372014-07-030.051000
382018-04-060.106000
392024-12-300.113000
402015-07-080.052000
412017-07-070.062000
422020-04-070.089000
432009-10-050.039000
442023-04-050.139000
452026-07-070.139000
462019-12-300.075000
472020-10-060.053000
482023-10-050.138000
492023-12-280.153000
502015-12-300.052000
512017-12-280.106000
522018-07-090.083000
532008-12-300.001000
542019-04-090.090000
552021-04-060.057000
562022-10-060.087000
572014-12-300.059000
582015-10-050.052000
592016-12-290.058000