f/overrides/event-backup/jhsc-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

355 B

1DateDividends
22018-06-260.143000
32020-12-240.216000
42021-12-270.222000
52023-12-260.216000
62021-06-250.170000
72023-06-270.141000
82024-12-270.246000
92025-06-260.175000
102025-12-290.298000
112026-06-260.190000
122019-12-240.196000
132020-06-250.127000
142022-06-270.095000
152022-12-270.251000
162018-12-240.103000
172019-06-250.121000
182024-06-260.135000