f/overrides/event-backup/ggbfx-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
2007-01-19,0.015000
2007-03-23,0.054000
2011-09-16,0.035000
2012-09-21,0.022000
2014-08-15,0.038000
2014-11-21,0.042000
2016-05-20,0.029000
2026-02-20,0.006000
2009-01-16,0.018000
2016-03-18,0.003000
2017-07-21,0.047000
2018-01-19,0.019000
2018-02-16,0.029000
2018-12-14,0.031000
2007-06-22,0.022000
2007-07-20,0.021000
2009-04-17,0.035000
2014-12-19,0.019000
2015-02-20,0.035000
2015-05-15,0.014000
2016-04-22,0.021000
2008-05-16,0.133000
2008-09-19,0.062000
2009-02-20,0.060000
2024-07-19,0.024000
2026-06-18,0.033000
2007-12-14,0.146000
2009-03-27,0.097000
2017-08-18,0.027000
2017-12-15,0.049000
2019-09-20,0.021000
2020-03-20,0.067000
2010-09-17,0.040000
2015-06-19,0.027000
2017-05-19,0.023000
2019-03-15,0.026000
2020-12-11,0.060000
2021-01-22,0.011000
2021-08-20,0.022000
2023-12-08,0.039000
2008-04-18,0.005000
2008-07-18,0.022000
2009-07-17,0.033000
2011-01-21,0.029000
2013-08-16,0.008000
2024-11-15,0.028000
2007-02-16,0.050000
2012-02-17,0.026000
2014-03-21,0.044000
2021-03-19,0.030000
2022-03-18,0.006000
2025-01-17,0.051000
2008-03-28,0.146000
2009-10-16,0.043000
2014-09-19,0.034000
2022-08-19,0.054000
2025-03-21,0.006000
2025-06-20,0.035000
2007-11-16,0.059000
2013-10-18,0.019000
2018-10-19,0.008000
2025-02-21,0.002000
2025-10-17,0.027000
2009-11-20,0.054000
2010-12-17,0.083000
2012-10-19,0.016000
2024-12-06,0.077000
2008-06-20,0.012000
2012-11-16,0.032000
2014-04-25,0.027000
2016-12-16,0.093000
2017-04-21,0.054000
2019-10-18,0.016000
2022-09-16,0.019000
2007-09-21,0.049000
2008-11-21,0.087000
2012-07-20,0.042000
2017-01-20,0.013000
2019-01-18,0.019000
2019-08-16,0.028000
2021-10-22,0.022000
2024-06-21,0.028000
2024-09-20,0.010000
2011-10-21,0.045000
2012-06-15,0.036000
2013-05-17,0.065000
2014-02-21,0.031000
2015-12-18,0.092000
2017-09-15,0.029000
2023-03-17,0.003000
2024-04-19,0.028000
2026-01-16,0.017000
2009-08-21,0.051000
2011-12-16,0.006000
2012-12-21,0.101000
2016-09-16,0.013000
2017-06-16,0.007000
2025-09-19,0.027000
2009-06-19,0.020000
2015-07-24,0.039000
2018-03-16,0.063000
2021-04-16,0.020000
2022-06-17,0.004000
2024-10-18,0.020000
2015-10-16,0.013000
2019-06-21,0.032000
2021-11-19,0.002000
2012-03-16,0.096000
2023-04-21,0.023000
2025-07-18,0.054000
2026-05-15,0.034000
2007-05-18,0.031000
2011-05-20,0.030000
2025-11-21,0.001000
2014-10-17,0.017000
2015-03-20,0.047000
2016-07-22,0.046000
2006-12-29,0.004000
2008-02-15,0.050000
2011-02-18,0.035000
2017-02-17,0.015000
2012-01-20,0.017000
2015-11-13,0.034000
2019-12-13,0.106000
2026-03-20,0.030000
2013-06-21,0.026000
2014-07-25,0.035000
2018-05-18,0.032000
2019-11-15,0.018000
2023-02-17,0.002000
2014-05-16,0.015000
2016-08-19,0.055000
2016-10-21,0.030000
2019-07-19,0.034000
2010-08-20,0.053000
2011-06-17,0.040000
2013-04-19,0.017000
2013-09-20,0.027000
2016-06-17,0.034000
2017-03-17,0.022000
2019-04-12,0.027000
2023-05-19,0.009000
2025-08-22,0.011000
2007-04-20,0.044000
2009-12-18,0.070000
2011-08-19,0.079000
2013-03-15,0.024000
2016-02-19,0.017000
2021-12-10,0.184000
2022-07-22,0.013000
2007-08-24,0.109000
2008-10-17,0.049000
2010-11-19,0.042000
2013-11-15,0.038000
2015-08-21,0.003000
2026-04-17,0.025000
2009-05-22,0.085000
2011-07-15,0.035000
2011-11-18,0.068000
2012-05-18,0.061000
2012-08-17,0.031000
2019-05-17,0.002000
2025-04-17,0.027000
2008-08-15,0.068000
2017-10-20,0.019000
2018-07-20,0.038000
2021-02-19,0.030000
2023-06-16,0.019000
2007-10-19,0.039000
2010-10-22,0.034000
2014-01-17,0.017000
2014-06-20,0.036000
2015-09-18,0.013000
2016-11-18,0.030000
2020-01-17,0.011000
2024-05-17,0.029000
2026-07-17,0.026000
2008-01-18,0.031000
2008-12-12,0.086000
2011-03-18,0.124000
2013-07-19,0.026000
2015-04-24,0.046000
2016-01-15,0.013000
2017-11-17,0.043000
2025-05-16,0.030000
2009-09-18,0.042000
2012-04-20,0.059000
2013-12-20,0.072000
2018-04-20,0.037000
2018-06-15,0.034000
2021-09-17,0.028000