f/overrides/event-backup/efax-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

455 B

1DateDividends
22018-06-010.577500
32018-12-210.343000
42022-06-010.635000
52019-06-030.624500
62021-12-170.529500
72022-12-160.321500
82023-12-150.343000
92026-06-010.803000
102017-09-150.120000
112019-12-200.356500
122020-12-180.330500
132021-06-010.554000
142023-06-010.714000
152024-12-180.422000
162025-11-250.902000
172016-12-160.079500
182017-03-170.113000
192017-06-160.467000
202017-12-150.354500
212020-06-010.328000
222024-06-030.669000
232025-06-020.766000