f/overrides/event-backup/ctt-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

195 lines
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Plaintext

Date,Dividends,ctime
2014-02-26,0.110000,2021-12-10 19:11:59
2014-05-28,0.110000,2021-12-10 19:11:59
2014-08-27,0.125000,2021-12-10 19:11:59
2014-11-24,0.125000,2021-12-10 19:11:59
2015-02-26,0.125000,2021-12-10 19:11:59
2015-05-27,0.125000,2021-12-10 19:11:59
2015-08-26,0.125000,2021-12-10 19:11:59
2015-11-24,0.125000,2021-12-10 19:11:59
2016-02-25,0.125000,2021-12-10 19:11:59
2016-05-25,0.135000,2021-12-10 19:11:59
2016-08-26,0.135000,2021-12-10 19:11:59
2016-11-16,0.135000,2021-12-10 19:11:59
2016-11-16,0.135,2017-08-22
2014-02-26,0.11,2017-08-22
2014-08-27,0.125,2017-08-22
2015-08-26,0.125,2017-08-22
2015-02-26,0.125,2017-08-22
2016-02-25,0.125,2017-08-22
2017-02-24,0.135000,2021-12-10 19:11:59
2017-05-26,0.135000,2021-12-10 19:11:59
2017-05-26,0.135,2017-08-22
2016-08-26,0.135,2017-08-22
2017-02-24,0.135,2017-08-22
2014-11-24,0.125,2017-08-22
2015-11-24,0.125,2017-08-22
2014-05-28,0.11,2017-08-22
2015-05-27,0.125,2017-08-22
2016-05-25,0.135,2017-08-22
2017-08-28,0.135000,2021-12-10 19:11:59
2017-08-28,0.135,2017-08-29 07:18:44
2014-05-28,0.11,2017-10-20 09:54:16
2015-05-27,0.125,2017-10-20 09:54:16
2016-05-25,0.135,2017-10-20 09:54:16
2017-11-29,0.135000,2021-12-10 19:11:59
2017-11-29,0.135,2017-11-30 07:17:01
2016-08-26,0.135,2017-11-30 07:17:01
2017-02-24,0.135,2017-11-30 07:17:01
2014-11-24,0.125,2017-11-30 07:17:01
2015-11-24,0.125,2017-11-30 07:17:01
2017-08-28,0.135,2017-11-30 07:17:01
2014-05-28,0.11,2017-11-30 07:17:01
2015-05-27,0.125,2017-11-30 07:17:01
2016-05-25,0.135,2017-11-30 07:17:01
2018-02-27,0.135000,2021-12-10 19:11:59
2018-02-27,0.135,2018-02-27 07:46:26
2014-05-28,0.11,2018-02-27 07:46:26
2015-05-27,0.125,2018-02-27 07:46:26
2016-05-25,0.135,2018-02-27 07:46:26
2018-05-30,0.135000,2021-12-10 19:11:59
2018-05-30,0.135,2018-12-20 11:23:51
2018-08-29,0.135000,2021-12-10 19:11:59
2018-11-29,0.135000,2021-12-10 19:11:59
2018-11-29,0.135,2018-12-20 11:23:51
2016-08-26,0.135,2018-12-20 11:23:51
2017-02-24,0.135,2018-12-20 11:23:51
2014-11-24,0.125,2018-12-20 11:23:51
2014-05-28,0.11,2020-02-28 09:08:57
2015-11-24,0.125,2018-12-20 11:23:51
2016-05-25,0.135,2020-02-28 09:08:57
2017-08-28,0.135,2018-12-20 11:23:51
2014-05-28,0.11,2018-12-20 11:23:51
2015-05-27,0.125,2018-12-20 11:23:51
2016-05-25,0.135,2018-12-20 11:23:51
2018-02-27,0.135,2018-12-20 11:23:51
2018-08-29,0.135,2018-12-20 11:23:51
2019-02-27,0.135000,2021-12-10 19:11:59
2019-02-27,0.135,2019-03-04 14:17:57
2014-02-26,0.11,2020-02-28 09:08:57
2014-08-27,0.125,2020-02-28 09:08:57
2016-02-25,0.125,2020-02-28 09:08:57
2017-05-26,0.135,2020-02-28 09:08:57
2019-05-30,0.135000,2021-12-10 19:11:59
2019-05-30,0.135,2019-06-04 09:49:57
2016-08-26,0.135,2019-06-04 09:49:57
2017-02-24,0.135,2019-06-04 09:49:57
2014-11-24,0.125,2019-06-04 09:49:57
2015-11-24,0.125,2019-06-04 09:49:57
2017-08-28,0.135,2019-06-04 09:49:57
2014-05-28,0.11,2019-06-04 09:49:57
2015-05-27,0.125,2019-06-04 09:49:57
2016-05-25,0.135,2019-06-04 09:49:57
2018-02-27,0.135,2019-06-04 09:49:57
2018-08-29,0.135,2019-06-04 09:49:57
2019-02-27,0.135,2019-06-04 09:49:57
2019-08-29,0.135000,2021-12-10 19:11:59
2019-08-29,0.135,2019-09-01 17:04:30
2019-11-25,0.135000,2021-12-10 19:11:59
2019-11-25,0.135,2019-11-26 13:28:45
2017-11-29,0.135,2019-11-26 13:28:45
2018-05-30,0.135,2019-11-26 13:28:45
2018-11-29,0.135,2019-11-26 13:28:45
2019-05-30,0.135,2019-11-26 13:28:45
2015-11-24,0.125,2020-02-28 09:08:57
2016-08-26,0.135,2019-11-26 13:28:45
2017-02-24,0.135,2019-11-26 13:28:45
2014-11-24,0.125,2019-11-26 13:28:45
2015-11-24,0.125,2019-11-26 13:28:45
2017-08-28,0.135,2019-11-26 13:28:45
2014-05-28,0.11,2019-11-26 13:28:45
2015-05-27,0.125,2019-11-26 13:28:45
2016-05-25,0.135,2019-11-26 13:28:45
2018-02-27,0.135,2019-11-26 13:28:45
2018-08-29,0.135,2019-11-26 13:28:45
2019-02-27,0.135,2019-11-26 13:28:45
2019-08-29,0.135,2019-11-26 13:28:45
2020-02-27,0.135000,2021-12-10 19:11:59
2020-02-27,0.135,2020-02-28 09:08:57
2020-05-28,0.135000,2021-12-10 19:11:59
2020-05-28,0.135,2020-05-29 09:19:11
2016-08-26,0.135,2020-05-29 09:19:11
2017-02-24,0.135,2020-05-29 09:19:11
2014-11-24,0.125,2020-05-29 09:19:11
2014-05-28,0.11,2020-05-29 09:19:11
2016-05-25,0.135,2020-05-29 09:19:11
2018-08-29,0.135,2020-05-29 09:19:11
2019-02-27,0.135,2020-05-29 09:19:11
2014-02-26,0.11,2020-05-29 09:19:11
2014-08-27,0.125,2020-05-29 09:19:11
2016-02-25,0.125,2020-05-29 09:19:11
2017-05-26,0.135,2020-05-29 09:19:11
2019-11-25,0.135,2020-05-29 09:19:11
2017-11-29,0.135,2020-05-29 09:19:11
2019-05-30,0.135,2020-05-29 09:19:11
2015-11-24,0.125,2020-05-29 09:19:11
2017-08-28,0.135,2020-05-29 09:19:11
2015-05-27,0.125,2020-05-29 09:19:11
2018-02-27,0.135,2020-05-29 09:19:11
2019-08-29,0.135,2020-05-29 09:19:11
2020-02-27,0.135,2020-05-29 09:19:11
2020-08-28,0.135000,2021-12-10 19:11:59
2020-08-28,0.135,2020-12-02 20:44:37
2018-05-30,0.135,2020-12-02 20:44:37
2018-11-29,0.135,2020-12-02 20:44:37
2020-05-28,0.135,2020-12-02 20:44:37
2016-08-26,0.135,2020-12-02 20:44:37
2017-02-24,0.135,2020-12-02 20:44:37
2014-11-24,0.125,2020-12-02 20:44:37
2014-05-28,0.11,2020-12-02 20:44:37
2016-05-25,0.135,2020-12-02 20:44:37
2018-08-29,0.135,2020-12-02 20:44:37
2019-02-27,0.135,2020-12-02 20:44:37
2014-02-26,0.11,2020-12-02 20:44:37
2014-08-27,0.125,2020-12-02 20:44:37
2016-02-25,0.125,2020-12-02 20:44:37
2020-11-27,0.135000,2021-12-10 19:11:59
2020-11-27,0.135,2020-12-02 20:44:37
2017-05-26,0.135,2020-12-02 20:44:37
2019-11-25,0.135,2020-12-02 20:44:37
2017-11-29,0.135,2020-12-02 20:44:37
2019-05-30,0.135,2020-12-02 20:44:37
2015-11-24,0.125,2020-12-02 20:44:37
2017-08-28,0.135,2020-12-02 20:44:37
2015-05-27,0.125,2020-12-02 20:44:37
2018-02-27,0.135,2020-12-02 20:44:37
2019-08-29,0.135,2020-12-02 20:44:37
2020-02-27,0.135,2020-12-02 20:44:37
2021-02-25,0.135000,2021-12-10 19:11:59
2021-02-25,0.135,2021-03-01 22:16:32
2014-02-26,0.11,2021-03-01 22:16:32
2014-08-27,0.125,2021-03-01 22:16:32
2016-02-25,0.125,2021-03-01 22:16:32
2020-11-27,0.135,2021-03-01 22:16:32
2017-05-26,0.135,2021-03-01 22:16:32
2019-11-25,0.135,2021-03-01 22:16:32
2017-11-29,0.135,2021-03-01 22:16:32
2019-05-30,0.135,2021-03-01 22:16:32
2015-11-24,0.125,2021-03-01 22:16:32
2017-08-28,0.135,2021-03-01 22:16:32
2015-05-27,0.125,2021-03-01 22:16:32
2018-02-27,0.135,2021-03-01 22:16:32
2019-08-29,0.135,2021-03-01 22:16:32
2020-02-27,0.135,2021-03-01 22:16:32
2021-05-27,0.135000,2021-12-10 19:11:59
2021-05-27,0.135,2021-06-14 09:21:02
2015-11-24,0.125,2021-06-14 09:21:02
2017-08-28,0.135,2021-06-14 09:21:02
2015-05-27,0.125,2021-06-14 09:21:02
2018-02-27,0.135,2021-06-14 09:21:02
2019-08-29,0.135,2021-06-14 09:21:02
2020-02-27,0.135,2021-06-14 09:21:02
2021-08-30,0.135000,2021-12-10 19:11:59
2021-08-30,0.135,2021-09-10 22:18:35
2017-11-29,0.135,2021-09-10 22:18:35
2019-05-30,0.135,2021-09-10 22:18:35
2021-05-27,0.135,2021-09-10 22:18:35
2015-11-24,0.125,2021-09-10 22:18:35
2017-08-28,0.135,2021-09-10 22:18:35
2015-05-27,0.125,2021-09-10 22:18:35
2018-02-27,0.135,2021-09-10 22:18:35
2019-08-29,0.135,2021-09-10 22:18:35
2020-02-27,0.135,2021-09-10 22:18:35
2021-11-29,0.075000,2021-12-10 19:11:59
2022-02-25,0.075000,2022-03-10 08:33:27