f/overrides/event-backup/jpxn-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

875 B

1DateDividends
22012-12-170.498000
32018-12-180.500000
42020-06-150.425000
52021-12-131.280000
62024-12-171.030000
72006-12-210.380000
82009-06-220.245000
92017-06-200.356000
102026-06-150.643000
112011-06-210.372000
122014-12-190.354000
132004-12-230.168500
142010-12-200.458000
152013-06-250.244000
162015-06-240.295000
172024-06-110.591000
182025-06-160.613000
192003-12-220.059500
202009-12-210.288000
212011-12-190.575000
222013-12-170.377000
232016-12-220.712000
242020-12-140.495000
252022-12-130.238000
262003-12-160.087500
272007-12-240.596500
282015-12-210.397000
292022-06-090.620000
302008-06-230.491000
312008-12-220.364000
322016-06-210.384000
332019-06-170.444000
342019-12-160.781000
352021-06-100.578000
362023-06-070.461000
372025-12-162.105000
382010-06-210.255000
392012-06-200.369000
402017-12-210.620000
412018-06-190.372000
422023-12-201.290000
432005-12-230.189500
442014-06-240.333000