f/overrides/event-backup/gmdyx-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
2017-05-19,0.021000
2018-11-16,0.045000
2021-03-19,0.039000
2003-08-22,0.067219
2008-05-16,0.099744
2014-12-19,0.192983
2015-02-20,0.028189
2016-03-18,0.032525
2017-04-21,0.033000
2008-06-20,0.130101
2025-06-20,0.055000
2025-01-17,0.064000
2026-07-17,0.044000
2004-01-23,0.045535
2007-09-21,0.067219
2019-05-17,0.044000
2021-07-16,0.027000
2023-12-08,0.073000
2004-10-22,0.036862
2017-11-17,0.028000
2019-12-13,0.231000
2025-11-21,0.049000
2005-02-18,0.054209
2018-02-16,0.022000
2019-11-15,0.032000
2023-02-17,0.031000
2003-07-25,0.034694
2003-12-19,0.466195
2018-08-17,0.037000
2009-03-27,0.166963
2016-05-20,0.019515
2005-06-17,0.078061
2022-01-21,0.001000
2009-07-17,0.071556
2009-11-20,0.082397
2016-08-19,0.054209
2017-12-15,0.049000
2020-10-16,0.036000
2003-04-25,0.112754
2004-09-24,0.060714
2006-07-21,0.123596
2022-04-22,0.030000
2022-07-22,0.042000
2002-01-18,0.060714
2007-12-14,0.197320
2005-07-22,0.101912
2008-11-21,0.123596
2016-06-17,0.026020
2018-05-18,0.029000
2001-09-21,0.104081
2008-03-28,0.192983
2026-01-16,0.041000
2023-07-21,0.044000
2002-07-19,0.106249
2004-05-21,0.060714
2005-12-23,0.316579
2008-09-19,0.121428
2017-08-18,0.021000
2018-12-14,0.080000
2020-12-11,0.454000
2025-02-21,0.043000
2025-05-16,0.041000
2025-07-18,0.046000
2005-08-19,0.069387
2017-01-20,0.004000
2019-08-16,0.032000
2020-08-21,0.017000
2003-10-24,0.047704
2006-09-22,0.108418
2016-02-19,0.013010
2017-06-16,0.026000
2020-02-21,0.051000
2021-10-22,0.033000
2002-06-21,0.147448
2004-08-20,0.056377
2015-04-24,0.052040
2015-06-19,0.021684
2021-08-20,0.027000
2018-04-20,0.035000
2022-05-20,0.033000
2022-12-09,0.044000
2001-12-21,0.212498
2004-02-20,0.032525
2008-12-12,0.208162
2014-09-19,0.045535
2015-09-18,0.019515
2023-04-21,0.041000
2024-04-19,0.053000
2025-12-05,0.057000
2004-04-23,0.060714
2005-10-21,0.080229
2002-05-17,0.117091
2009-06-19,0.104081
2015-08-21,0.015178
2021-04-16,0.024000
2022-08-19,0.028000
2005-03-18,0.056377
2006-04-21,0.088902
2007-05-18,0.121428
2022-09-16,0.026000
2018-10-19,0.013000
2020-09-18,0.025000
2023-03-17,0.037000
2003-11-21,0.065051
2005-01-21,0.047704
2006-10-20,0.110586
2018-01-19,0.013000
2021-01-22,0.004000
2016-04-22,0.041199
2016-07-22,0.056377
2023-09-22,0.040000
2024-01-19,0.005000
2026-05-15,0.041000
2016-12-16,0.119000
2005-11-18,0.097576
2014-11-21,0.049872
2018-07-20,0.034000
2020-11-20,0.019000
2005-05-20,0.073724
2007-03-23,0.138774
2007-11-16,0.112754
2016-10-21,0.032000
2019-06-21,0.044000
2004-07-23,0.062882
2008-10-17,0.099744
2014-08-15,0.034694
2016-01-15,0.006505
2024-07-19,0.037000
2002-10-18,0.112754
2023-08-18,0.028000
2008-02-15,0.106249
2018-03-16,0.025000
2024-08-16,0.043000
2007-07-20,0.075892
2021-05-21,0.021000
2023-05-19,0.032000
2025-08-22,0.055000
2009-12-18,0.236350
2016-11-18,0.036000
2022-06-17,0.012000
2023-10-20,0.031000
2008-07-18,0.093239
2014-10-17,0.036862
2025-09-19,0.047000
2019-04-12,0.037000
2019-10-18,0.034000
2020-07-17,0.028000
2002-12-20,0.143111
2003-03-21,0.123596
2003-09-26,0.093239
2009-02-20,0.069387
2009-09-18,0.080229
2022-03-18,0.010000
2022-11-18,0.027000
2004-06-18,0.054209
2015-03-20,0.151784
2015-12-18,0.292727
2018-09-21,0.037000
2020-03-20,0.028000
2004-12-17,0.392471
2019-01-18,0.019000
2019-02-15,0.027000
2024-11-15,0.049000
2009-05-22,0.054209
2015-10-16,0.008673
2019-07-19,0.035000
2004-11-19,0.060714
2006-02-17,0.045535
2006-11-17,0.080229
2015-07-24,0.069387
2019-09-20,0.042000
2021-09-17,0.023000
2025-10-17,0.044000
2003-06-20,0.034694
2006-06-23,0.140943
2006-12-22,0.156121
2002-02-22,0.123596
2007-10-19,0.136606
2024-05-17,0.046000
2008-04-18,0.069387
2009-10-16,0.062882
2006-05-19,0.065051
2016-09-16,0.069387
2018-06-15,0.028000
2002-04-19,0.112754
2007-04-20,0.104081
2026-06-18,0.060000
2004-03-19,0.054209
2007-02-16,0.084566
2007-06-22,0.119259
2008-08-15,0.097576
2020-05-15,0.018000
2026-04-17,0.042000
2001-11-16,0.108418
2020-06-19,0.033000
2021-02-19,0.011000
2021-06-18,0.018000
2021-11-19,0.021000
2009-01-16,0.028189
2015-11-13,0.071556
2026-02-20,0.042000
2017-07-21,0.032000
2017-09-15,0.026000
2017-10-20,0.025000
2020-04-17,0.031000
2025-03-21,0.043000
2003-01-24,0.080229
2006-03-24,0.125764
2007-01-19,0.062882
2023-06-16,0.036000
2024-03-15,0.046000
2014-12-22,0.089000
2015-01-16,0.015178
2017-02-17,0.013000
2024-10-18,0.041000
2025-04-17,0.044000
2002-03-22,0.121428
2008-01-18,0.065051
2009-04-17,0.080229
2020-01-17,0.019000
2024-12-06,0.093000
2007-08-24,0.164795
2005-04-22,0.062882
2021-12-10,0.048000
2023-01-20,0.041000
2023-11-17,0.026000
2003-05-16,0.030357
2006-08-25,0.125764
2009-08-21,0.080229
2005-09-23,0.101912
2006-01-20,0.060714
2017-03-17,0.038000
2024-02-16,0.069000
2024-09-20,0.048000
2002-09-20,0.121428
2003-02-21,0.095407
2022-10-21,0.036000
2024-06-21,0.053000
2001-10-19,0.101912
2002-08-16,0.110586
2002-11-22,0.140943
2019-03-15,0.039000
2026-03-20,0.046000