f/overrides/event-backup/jlpsx-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

775 B

1DateDividends
22013-12-200.115000
32016-12-200.095000
42021-12-136.785000
52005-12-300.043000
62006-12-220.069000
72011-12-200.128000
82015-12-210.063000
92022-12-200.018000
102023-12-200.040000
112009-12-210.115000
122012-12-130.981000
132015-12-112.415000
142024-12-121.347000
152010-12-200.089000
162018-12-124.117000
172022-12-134.841000
182020-12-116.824000
192008-12-220.183000
202014-12-122.133000
212018-12-190.121000
222020-12-180.065000
232025-12-110.656000
242025-12-180.045000
252007-12-200.079000
262014-12-190.192000
272019-12-190.041000
282023-12-131.989000
292012-12-180.169000
302013-12-122.312000
312017-12-134.123000
322019-08-084.138000
332006-12-150.207000
342007-12-170.654000
352010-04-300.018000
362024-12-190.021000
372016-12-141.235000
382017-12-200.026000
392019-12-121.517000