f/overrides/event-backup/fetkx-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
2019-12-27,1.742000
2021-04-05,0.109000
2023-04-05,0.085000
2025-07-11,0.145000
2008-07-11,0.103000
2008-10-03,0.088000
2009-04-03,0.101000
2019-10-04,0.138000
2024-12-26,1.891000
2012-04-04,0.100000
2012-12-14,0.153000
2017-10-06,0.138000
2018-07-06,0.169000
2020-04-03,0.120000
2021-10-01,0.161000
2010-12-10,0.092000
2015-07-01,0.149000
2019-04-05,0.132000
2019-07-05,0.170000
2010-10-01,0.066000
2014-10-03,0.127000
2015-01-16,0.084000
2016-10-07,0.143000
2008-12-12,0.081000
2009-07-10,0.071000
2009-10-02,0.063000
2009-12-11,0.067000
2018-10-05,0.158000
2011-07-08,0.106000
2014-12-12,0.197000
2017-07-07,0.146000
2026-07-10,0.162000
2025-04-04,0.145000
2012-07-06,0.126000
2016-01-15,0.032000
2016-07-08,0.064000
2024-04-05,0.114000
2024-07-05,0.206000
2026-04-01,0.153000
2014-07-03,0.129000
2017-04-07,0.169000
2021-12-28,2.799000
2022-07-01,0.176000
2017-12-26,2.390000
2020-12-29,0.238000
2023-10-06,0.157000
2011-04-06,0.055000
2011-10-07,0.097000
2012-10-05,0.116000
2023-12-26,0.995000
2024-10-04,0.172000
2025-12-26,1.852000
2022-10-07,0.138000
2020-07-10,0.169000
2020-10-02,0.115000
2021-07-02,0.168000
2022-04-01,0.101000
2013-10-04,0.108000
2025-10-03,0.174000
2011-12-09,0.115000
2015-04-01,0.113000
2016-12-27,1.304000
2018-12-26,2.693000
2014-04-04,0.250000
2018-04-06,0.145000
2022-12-27,1.567000
2015-12-11,1.001000
2016-04-08,0.126000
2023-07-07,0.203000
2010-07-09,0.072000
2013-04-05,0.103000
2013-07-05,0.133000
2013-12-13,0.147000
2015-10-02,0.150000