f/overrides/event-backup/dfcex-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

1.6 KiB

1DateDividends
22008-12-090.029000
32016-06-290.113000
42007-12-190.112000
52013-03-080.013000
62013-06-100.138000
72025-06-270.206000
82011-06-080.116000
92009-12-080.067000
102010-03-090.012000
112010-04-300.029000
122017-12-140.136000
132019-12-160.117000
142023-03-300.026000
152024-06-270.156000
162005-09-080.035000
172011-09-080.141000
182020-12-140.073000
192006-09-080.089000
202008-09-090.129000
212008-10-270.058000
222010-06-080.113000
232019-03-280.027000
242022-06-290.182000
252023-06-290.221000
262026-06-290.214000
272005-06-080.030000
282008-06-100.157000
292015-12-150.106000
302018-06-280.109000
312018-12-170.125000
322008-03-100.027000
332017-09-280.192000
342022-03-300.026000
352012-06-080.114000
362012-09-100.124000
372015-06-080.070000
382016-03-300.055000
392020-09-290.170000
402021-03-300.018000
412024-03-270.034000
422025-03-280.043000
432006-03-080.006000
442025-09-290.277000
452013-09-100.121000
462014-12-150.112000
472016-09-290.094000
482024-12-100.348000
492007-09-100.093000
502006-11-270.020000
512006-12-180.134000
522013-12-110.123000
532016-12-140.084000
542019-09-270.254000
552020-06-290.132000
562021-09-290.249000
572005-12-190.038000
582023-09-280.221000
592022-12-120.165000
602014-09-090.175000
612011-12-120.127000
622009-03-100.011000
632012-12-120.096000
642021-12-130.215000
652024-09-270.259000
662007-11-260.065000
672014-06-090.099000
682018-09-270.215000
692022-09-290.387000
702009-09-090.067000
712010-09-080.093000
722010-12-080.100000
732017-03-300.005000
742023-12-110.323000
752025-12-100.318000
762007-06-080.090000
772009-06-090.095000
782017-06-290.113000
792026-03-300.053000
802006-06-080.066000
812019-06-270.129000
822020-03-300.037000
832021-06-290.167000
842015-09-090.184000