f/overrides/event-backup/kbwy-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

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Date,Dividends
2012-05-15,0.104000
2013-07-15,0.121000
2016-02-12,0.180000
2016-08-15,0.212000
2018-11-19,0.173000
2020-06-22,0.205000
2015-11-13,0.153000
2019-11-18,0.181000
2011-11-15,0.109000
2012-04-13,0.134000
2013-03-15,0.130000
2014-03-14,0.133000
2014-12-15,0.134000
2015-08-14,0.141000
2022-09-19,0.125000
2011-01-14,0.121000
2015-06-15,0.137000
2016-05-13,0.193000
2017-12-18,0.213000
2019-09-23,0.150000
2012-01-13,0.126000
2013-01-15,0.130000
2013-06-14,0.122000
2021-07-19,0.099000
2022-01-24,0.104000
2014-05-15,0.134000
2016-07-15,0.207000
2017-09-18,0.224000
2018-03-19,0.220000
2020-07-20,0.209000
2023-01-23,0.132000
2011-07-15,0.126000
2023-11-20,0.128000
2019-03-18,0.161000
2022-10-24,0.130000
2023-10-23,0.128000
2025-05-19,0.126000
2025-10-20,0.126000
2021-02-22,0.124000
2022-07-18,0.135000
2012-07-13,0.100000
2013-02-15,0.116000
2013-08-15,0.114000
2015-04-15,0.145000
2016-03-15,0.176000
2016-06-15,0.196000
2012-11-15,0.125000
2014-08-15,0.132000
2015-03-13,0.143000
2018-02-20,0.220000
2020-02-24,0.193000
2023-12-18,0.131000
2014-02-14,0.127000
2015-12-15,0.153000
2020-11-23,0.126000
2011-04-15,0.115000
2016-09-15,0.222000
2017-06-15,0.203000
2018-10-22,0.178000
2024-11-18,0.126000
2011-02-15,0.106000
2015-10-15,0.162000
2019-04-22,0.156000
2022-03-21,0.107000
2012-09-14,0.122000
2020-01-21,0.188000
2023-09-18,0.125000
2013-09-13,0.108000
2017-03-15,0.192000
2020-03-23,0.196000
2025-03-24,0.126000
2022-05-23,0.112000
2022-08-22,0.139000
2011-08-15,0.117000
2012-06-15,0.102000
2014-04-15,0.136000
2016-11-15,0.226000
2017-05-15,0.201000
2018-06-18,0.182000
2023-04-24,0.147000
2024-10-21,0.127000
2017-08-15,0.215000
2021-04-19,0.113000
2021-09-20,0.099000
2023-08-21,0.120000
2011-01-04,0.164000
2021-08-23,0.098000
2022-04-18,0.110000
2024-03-18,0.132000
2025-07-21,0.126000
2026-01-20,0.125000
2015-07-15,0.142000
2020-08-24,0.210000
2020-09-21,0.141000
2022-06-21,0.132000
2023-02-21,0.137000
2024-05-20,0.132000
2022-12-19,0.121000
2025-09-22,0.126000
2012-10-15,0.130000
2017-10-23,0.230000
2018-01-22,0.222000
2018-12-24,0.174000
2019-10-21,0.168000
2022-11-21,0.124000
2026-03-23,0.125000
2017-02-15,0.204000
2019-05-20,0.151000
2012-03-15,0.125000
2012-12-14,0.129000
2014-06-13,0.133000
2014-11-14,0.137000
2015-05-15,0.142000
2017-01-13,0.213000
2021-03-22,0.120000
2022-02-22,0.105000
2024-07-22,0.132000
2024-08-19,0.132000
2021-06-21,0.103000
2021-11-22,0.102000
2026-06-22,0.120000
2026-08-24,0.120000
2023-05-22,0.149000
2013-11-15,0.116000
2016-04-15,0.190000
2017-04-13,0.229000
2018-05-21,0.178000
2019-02-19,0.165000
2021-12-20,0.103000
2013-10-15,0.113000
2019-06-24,0.150000
2019-07-22,0.149000
2024-09-23,0.130000
2013-05-15,0.113000
2018-09-24,0.130000
2025-01-21,0.126000
2025-06-23,0.126000
2026-07-20,0.120000
2011-06-15,0.112000
2014-09-15,0.138000
2015-09-15,0.145000
2016-10-14,0.278000
2024-04-22,0.132000
2025-11-24,0.126000
2019-08-19,0.147000
2019-12-23,0.183000
2011-09-15,0.118000
2011-12-15,0.087000
2014-01-15,0.125000
2014-07-15,0.131000
2015-02-13,0.142000
2018-08-20,0.210000
2020-10-19,0.134000
2021-01-19,0.129000
2023-07-24,0.118000
2011-05-13,0.119000
2011-10-14,0.114000
2020-12-21,0.140000
2026-04-20,0.125000
2016-01-15,0.160000
2016-12-15,0.225000
2025-08-18,0.126000
2021-05-24,0.108000
2021-10-18,0.101000
2012-02-15,0.126000
2014-10-15,0.138000
2015-01-15,0.138000
2017-07-14,0.217000
2019-01-22,0.171000
2020-05-18,0.202000
2023-06-20,0.140000
2024-01-22,0.131000
2025-04-21,0.126000
2026-02-23,0.125000
2011-03-15,0.122000
2013-12-13,0.123000
2017-11-20,0.226000
2020-04-20,0.199000
2024-06-24,0.132000
2025-12-22,0.125000
2024-12-23,0.126000
2025-02-24,0.126000
2012-08-15,0.100000
2013-04-15,0.135000
2018-04-23,0.226000
2018-07-23,0.215000
2023-03-20,0.139000
2024-02-20,0.132000
2026-05-18,0.123000