f/overrides/event-backup/jfbux-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
22020-03-310.054000
32020-09-300.057000
42025-12-310.306000
52026-03-310.092000
62017-12-290.260000
72018-12-140.874000
82019-03-290.047000
92020-06-300.054000
102021-09-300.052000
112023-12-150.243000
122025-06-300.098000
132023-09-290.083000
142019-12-160.969000
152020-12-310.173000
162021-06-300.049000
172021-12-150.345000
182022-06-300.064000
192022-09-300.068000
202022-12-300.161000
212024-09-300.097000
222025-09-300.099000
232024-12-160.306000
242017-12-151.123000
252018-03-290.043000
262018-09-280.052000
272021-12-310.433000
282022-12-150.935000
292024-03-280.077000
302024-06-280.089000
312025-03-310.085000
322018-12-310.316000
332023-12-290.187000
342019-06-280.058000
352019-09-300.058000
362021-03-310.045000
372022-03-310.045000
382023-06-300.074000
392024-12-310.346000
402017-09-290.048000
412018-06-290.048000
422019-12-310.163000
432020-12-151.048000
442023-03-310.070000
452025-12-150.474000
462026-06-300.098000