f/overrides/event-backup/jhtrx-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

495 B

1DateDividends
22026-06-260.034000
32021-03-290.004000
42022-06-280.041000
52023-09-270.048000
62023-12-200.062000
72024-12-190.057000
82025-09-260.053000
92021-12-200.037000
102021-12-300.002000
112023-03-290.040000
122023-06-280.046000
132024-06-260.044000
142024-09-260.043000
152021-06-280.018000
162021-09-280.023000
172022-03-290.026000
182022-12-130.148000
192025-03-270.040000
202025-12-180.046000
212022-09-280.050000
222022-12-200.054000
232024-03-260.035000
242025-06-260.043000
252026-03-270.034000