f/overrides/event-backup/alfyx-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

415 B

1DateDividends
22007-12-210.842000
32011-12-210.073000
42016-12-212.929000
52024-12-190.276000
62017-12-203.182000
72020-12-222.146000
82022-12-221.477000
92023-12-210.164000
102006-12-210.803000
112012-12-201.158000
122013-12-202.481000
132014-12-233.495000
142025-12-231.425000
152004-12-210.158000
162018-12-203.488000
172019-12-203.287000
182008-12-230.097000
192009-12-230.076000
202015-12-224.081000
212021-12-221.608000