f/overrides/event-backup/jtybx-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

1015 B

1DateDividends
22021-12-150.932000
32025-12-150.032000
42019-09-300.087000
52021-03-310.080000
62021-09-300.091000
72017-06-300.136000
82018-03-290.066000
92018-12-140.552000
102013-12-310.139000
112015-12-310.156000
122016-12-300.182000
132016-09-300.073000
142018-06-290.181000
152018-09-280.085000
162018-12-310.190000
172019-06-280.193000
182013-06-280.051000
192014-06-300.142000
202014-12-310.149000
212025-12-310.906000
222020-09-300.101000
232021-06-300.156000
242023-12-290.616000
252016-06-300.132000
262017-03-310.059000
272017-09-290.090000
282020-06-300.063000
292021-12-310.409000
302012-12-310.134000
312013-09-300.133000
322015-12-180.010000
332019-12-310.198000
342020-03-310.062000
352020-12-310.159000
362022-12-300.506000
372013-03-280.061000
382013-12-180.234000
392019-12-160.043000
402012-09-280.115000
412017-12-290.208000
422019-03-290.061000
432014-03-310.059000
442015-03-310.058000
452015-09-300.066000
462016-03-310.061000
472017-12-150.004000
482024-12-310.727000
492014-09-300.070000
502014-12-170.031000
512015-06-300.125000