f/overrides/event-backup/jftux-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

915 B

1DateDividends
22021-03-310.030000
32019-09-300.038000
42019-12-310.204000
52020-09-300.040000
62020-12-151.334000
72022-09-300.052000
82022-12-300.209000
92023-06-300.053000
102018-09-280.034000
112026-06-300.061000
122018-03-290.024000
132019-06-280.037000
142023-03-310.049000
152023-12-290.241000
162024-03-280.050000
172025-12-150.464000
182017-09-290.029000
192024-06-280.059000
202025-09-300.067000
212022-03-310.030000
222019-12-161.393000
232020-06-300.039000
242022-12-151.402000
252023-12-150.442000
262024-12-160.219000
272025-12-310.455000
282018-06-290.027000
292023-09-290.063000
302024-09-300.066000
312026-03-310.056000
322017-12-290.366000
332018-12-310.441000
342019-03-290.029000
352020-03-310.035000
362021-09-300.038000
372021-12-150.468000
382022-06-300.052000
392024-12-310.529000
402017-12-151.436000
412020-12-310.219000
422021-06-300.033000
432021-12-310.670000
442025-03-310.053000
452025-06-300.066000
462018-12-141.009000