f/overrides/event-backup/jsmd-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

835 B

1DateDividends
22023-03-310.057000
32025-09-300.122000
42016-12-230.077000
52018-06-290.045000
62021-03-310.023000
72022-09-300.053000
82019-03-290.015000
92017-09-290.029000
102018-12-200.104000
112024-06-280.057000
122025-06-300.126000
132017-06-300.014000
142023-09-290.070000
152025-03-310.066000
162023-12-200.099000
172019-09-300.026000
182021-06-300.023000
192022-12-200.084000
202023-06-300.065000
212025-12-190.124000
222026-06-300.082000
232016-09-300.010000
242017-03-310.022000
252017-12-220.050000
262024-03-280.066000
272021-12-200.068000
282022-03-310.025000
292026-03-310.079000
302016-06-300.017000
312018-03-290.024000
322019-06-280.042000
332020-09-300.018000
342020-12-210.093000
352021-09-300.073000
362022-06-300.045000
372024-09-300.041000
382018-09-280.022000
392019-12-190.069000
402020-03-310.029000
412020-06-300.011000
422024-12-200.404000