f/overrides/event-backup/asrfx-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
22014-09-180.135000
32021-06-240.045000
42022-09-220.054000
52023-03-230.054000
62019-03-210.085000
72022-12-140.055000
82019-12-130.508000
92021-03-250.045000
102014-12-120.119000
112016-03-170.073000
122018-09-130.085000
132014-06-190.120000
142020-03-190.075000
152021-12-140.080000
162015-09-170.085000
172025-09-250.063000
182025-06-260.064000
192016-12-130.158000
202022-06-230.055000
212025-03-270.075000
222015-12-110.281000
232024-09-260.073000
242013-12-130.242000
252019-09-190.124000
262025-12-110.063000
272026-06-250.064000
282024-12-120.097000
292012-12-070.245000
302013-09-190.099000
312016-06-160.078000
322018-06-210.084000
332023-12-130.108000
342024-06-270.073000
352013-03-210.083000
362017-06-150.070000
372018-03-220.069000
382013-06-200.100000
392015-03-190.085000
402019-06-200.085000
412024-03-280.073000
422026-03-260.064000
432020-09-170.055000
442021-09-230.055000
452016-09-150.118000
462017-09-140.070000
472017-12-130.162000
482020-12-110.045000
492023-06-220.059000
502022-03-240.055000
512023-09-280.059000
522014-03-200.100000
532015-06-180.085000
542017-03-160.050000
552018-12-140.098000
562020-06-180.055000