f/overrides/event-backup/jfqux-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
22022-09-300.072000
32025-06-300.107000
42025-09-300.107000
52018-03-290.053000
62019-09-300.071000
72020-03-310.064000
82020-09-300.062000
92021-12-310.322000
102025-12-150.513000
112023-12-290.163000
122024-03-280.087000
132025-03-310.095000
142018-09-280.064000
152020-12-310.157000
162022-12-300.134000
172023-03-310.077000
182023-09-290.090000
192026-03-310.100000
202026-06-300.106000
212022-03-310.050000
222024-12-310.256000
232019-03-290.058000
242019-06-280.069000
252020-12-150.687000
262021-09-300.056000
272021-12-150.307000
282017-12-290.187000
292018-06-290.060000
302023-12-150.160000
312024-06-280.100000
322025-12-310.237000
332017-12-150.740000
342018-12-310.242000
352019-12-310.146000
362020-06-300.060000
372022-12-150.686000
382017-09-290.058000
392021-03-310.051000
402024-09-300.107000
412019-12-160.695000
422021-06-300.055000
432022-06-300.067000
442018-12-140.682000
452023-06-300.082000
462024-12-160.434000