f/overrides/event-backup/mjrfx-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

475 B

1DateDividends
22022-12-070.190000
32018-04-110.090000
42018-07-190.318000
52020-04-080.063000
62020-10-080.067000
72020-12-070.067000
82021-07-151.082000
92022-07-140.752000
102025-07-170.492000
112026-07-220.314000
122019-07-180.065000
132023-12-080.743000
142018-10-110.075000
152018-12-060.822000
162019-10-100.082000
172019-12-050.553000
182021-12-071.457000
192024-07-180.810000
202019-04-100.070000
212020-07-160.242000
222023-07-200.099000
232024-12-101.453000
242025-12-092.106000