f/overrides/event-backup/glv-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
2024-10-18,0.053000
2025-07-18,0.053000
2014-08-14,0.104895
2016-02-17,0.119880
2012-01-18,0.299700
2014-07-16,0.104895
2015-03-16,0.119880
2016-03-16,0.119880
2018-02-16,0.122877
2018-08-20,0.112887
2007-04-11,0.359640
2011-01-19,0.299700
2024-06-17,0.053000
2025-04-17,0.053000
2017-10-19,0.121878
2013-01-16,0.299700
2017-08-18,0.121878
2018-01-19,0.121878
2022-01-20,0.091000
2014-09-16,0.104895
2016-12-14,0.102897
2017-02-15,0.102897
2019-05-20,0.103896
2021-01-19,0.097000
2022-10-20,0.091000
2013-10-17,0.299700
2014-05-14,0.104895
2024-11-15,0.053000
2013-04-10,0.299700
2014-10-15,0.104895
2009-01-14,0.319680
2017-06-15,0.102897
2017-07-13,0.102897
2018-11-19,0.105894
2019-11-19,0.100000
2020-02-14,0.101000
2006-07-12,0.359640
2008-04-14,0.459540
2021-08-19,0.097000
2021-12-20,0.097000
2015-02-12,0.119880
2016-04-13,0.119880
2016-11-16,0.102897
2020-06-18,0.101000
2005-12-27,0.669331
2010-01-20,0.299700
2025-03-18,0.053000
2017-12-18,0.123876
2023-12-21,0.060000
2014-02-12,0.104895
2017-01-18,0.102897
2020-04-17,0.101000
2024-03-14,0.053000
2026-03-18,0.057000
2005-07-13,0.329670
2008-10-14,0.319680
2017-09-19,0.121878
2020-10-19,0.101000
2022-05-19,0.091000
2023-09-21,0.060000
2024-01-18,0.053000
2011-07-18,0.299700
2012-10-17,0.299700
2020-09-17,0.101000
2022-12-19,0.091000
2016-09-14,0.102897
2019-09-19,0.103000
2018-04-19,0.116883
2019-02-15,0.099900
2022-11-17,0.091000
2025-11-17,0.053000
2026-06-17,0.057000
2026-08-18,0.057000
2015-07-15,0.119880
2018-03-16,0.116883
2015-01-14,0.119880
2015-09-16,0.119880
2026-01-20,0.057000
2006-12-27,1.068931
2009-07-20,0.259740
2023-05-18,0.060000
2026-07-17,0.057000
2014-04-15,0.104895
2018-06-18,0.113886
2021-02-17,0.097000
2022-02-17,0.091000
2022-08-18,0.091000
2025-05-19,0.053000
2025-08-18,0.053000
2015-10-14,0.119880
2017-04-12,0.102897
2018-10-18,0.111888
2019-08-20,0.104000
2025-10-17,0.053000
2007-07-11,0.449550
2010-04-14,0.299700
2014-06-16,0.104895
2017-03-16,0.102897
2017-11-17,0.121878
2018-09-19,0.113886
2019-12-20,0.101000
2020-11-19,0.101000
2011-10-19,0.299700
2014-01-07,0.299700
2023-11-16,0.060000
2022-09-19,0.091000
2023-03-16,0.060000
2014-11-14,0.104895
2015-08-17,0.119880
2016-01-13,0.119880
2016-10-17,0.102897
2019-01-18,0.099900
2020-12-18,0.101000
2006-04-11,0.359640
2007-12-27,1.188811
2024-12-16,0.053000
2021-03-18,0.097000
2021-10-19,0.097000
2022-03-17,0.091000
2023-08-17,0.060000
2024-07-19,0.053000
2020-01-17,0.101000
2020-05-18,0.101000
2018-12-20,0.104895
2023-02-16,0.060000
2024-02-15,0.053000
2025-12-17,0.053000
2012-07-18,0.299700
2016-07-14,0.119880
2010-07-22,0.299700
2015-06-16,0.119880
2019-06-14,0.101898
2021-11-18,0.097000
2022-06-16,0.091000
2024-08-16,0.053000
2006-10-11,0.359640
2008-07-14,0.459540
2025-01-17,0.053000
2026-02-18,0.057000
2016-05-16,0.119880
2019-04-18,0.102897
2019-07-19,0.103000
2013-07-17,0.299700
2015-04-15,0.119880
2020-07-20,0.101000
2023-07-20,0.060000
2015-05-14,0.119880
2015-11-17,0.119880
2024-09-17,0.053000
2004-10-13,0.299700
2023-06-15,0.060000
2020-08-20,0.101000
2022-07-18,0.091000
2025-02-18,0.053000
2025-06-17,0.053000
2016-06-15,0.119880
2020-03-19,0.101000
2021-09-20,0.097000
2023-01-19,0.060000
2014-03-14,0.104895
2021-05-19,0.097000
2015-12-16,0.119880
2018-05-18,0.113886
2025-09-17,0.053000
2026-04-17,0.057000
2005-04-13,0.329670
2010-10-19,0.299700
2014-12-17,0.104895
2019-03-20,0.102897
2019-10-18,0.100000
2021-07-19,0.097000
2023-10-19,0.060000
2024-04-18,0.053000
2005-12-28,0.359640
2014-01-15,0.104895
2007-10-15,0.449550
2009-10-19,0.279720
2021-06-18,0.097000
2026-05-18,0.057000
2005-01-18,0.299700
2005-10-12,0.359640
2016-08-17,0.102897
2017-05-17,0.102897
2021-04-19,0.097000
2023-04-20,0.060000
2011-04-13,0.299700
2012-04-11,0.299700
2022-04-18,0.091000
2024-05-16,0.053000
2009-04-15,0.259740
2018-07-19,0.113886