f/overrides/event-backup/eod-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
22015-03-120.180000
32016-12-120.135000
42018-12-140.154000
52019-12-120.145000
62022-12-120.120000
72023-09-110.106000
82009-03-110.500000
92013-03-120.210000
102026-06-110.142000
112021-06-110.132000
122023-03-100.113000
132011-09-120.280000
142013-06-130.210000
152013-09-130.210000
162014-03-130.180000
172016-03-110.135000
182017-12-120.163000
192007-12-130.500000
202010-06-110.280000
212024-06-130.111000
222024-09-130.116000
232025-06-120.126000
242019-09-120.146000
252020-03-120.147000
262012-12-130.210000
272022-06-100.134000
282019-03-110.149000
292020-06-120.142000
302012-06-110.280000
312021-03-110.127000
322024-12-120.120000
332008-03-130.500000
342010-03-110.280000
352022-03-110.134000
362025-12-110.132000
372008-09-120.500000
382011-12-120.280000
392019-06-130.147000
402023-12-110.107000
412017-03-130.135000
422018-09-140.160000
432015-12-110.180000
442017-06-120.165000
452017-09-120.163000
462023-06-120.107000
472008-06-120.500000
482009-12-110.280000
492014-12-110.180000
502020-09-110.135000
512012-03-120.280000
522014-09-110.180000
532015-06-110.180000
542020-12-110.130000
552025-09-120.127000
562026-03-120.136000
572007-10-110.500000
582008-12-110.500000
592010-12-130.280000
602011-03-110.280000
612014-06-120.180000
622016-09-120.135000
632021-09-130.126000
642025-03-130.124000
652009-06-110.500000
662010-09-130.280000
672021-12-130.131000
682022-09-120.128000
692024-03-110.108000
702007-07-120.500000
712009-09-140.280000
722012-09-140.280000
732015-09-110.180000
742018-06-120.164000
752011-06-130.280000
762013-12-120.180000
772016-06-130.135000