f/overrides/event-backup/ddiax-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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Plaintext

Date,Dividends
2016-01-22,0.014000
2026-05-22,0.018000
2012-11-21,0.025000
2014-04-22,0.023000
2024-01-22,0.045000
2010-10-22,0.027000
2014-03-21,0.032000
2017-06-22,0.030000
2017-12-13,0.055000
2019-02-22,0.028000
2025-04-22,0.021000
2025-05-22,0.023000
2025-08-22,0.022000
2006-06-22,0.088000
2016-06-22,0.021000
2009-12-22,0.113000
2009-06-22,0.094000
2014-10-22,0.016000
2024-03-22,0.095000
2017-03-22,0.035000
2021-05-21,0.024000
2026-06-22,0.033000
2012-09-21,0.032000
2017-04-21,0.023000
2017-02-22,0.041000
2020-08-21,0.014000
2021-06-22,0.032000
2025-07-22,0.022000
2002-12-20,0.483000
2006-09-22,0.108000
2000-12-22,0.400000
2009-09-22,0.100000
2010-06-22,0.098000
2014-09-22,0.030000
2015-11-20,0.026000
2022-05-20,0.029000
2022-09-22,0.022000
2012-10-22,0.028000
2015-04-22,0.026000
2020-09-22,0.023000
2023-03-22,0.029000
2023-08-22,0.027000
2024-11-22,0.017000
2013-05-22,0.026000
2013-08-22,0.025000
2022-03-22,0.022000
2022-04-22,0.012000
2005-06-22,0.083000
2019-03-22,0.035000
2013-09-20,0.030000
2018-04-20,0.029000
2020-10-22,0.023000
2022-11-22,0.022000
2026-01-22,0.019000
2006-03-22,0.095000
2012-05-22,0.028000
2016-10-21,0.015000
2008-12-22,0.187000
2016-04-22,0.017000
2018-11-21,0.032000
2020-12-18,0.049000
2015-10-22,0.013000
2018-10-22,0.024000
2022-10-21,0.014000
2008-09-22,0.110000
2011-01-21,0.021000
2018-06-22,0.031000
2011-06-22,0.027000
2015-01-22,0.020000
2022-02-22,0.019000
2011-05-20,0.041000
2021-11-22,0.020000
2013-06-21,0.032000
2023-12-18,0.304000
2025-09-22,0.026000
2003-12-22,0.154000
2011-02-22,0.033000
2008-03-20,0.102000
2011-10-21,0.025000
2014-02-21,0.030000
2015-03-20,0.028000
2004-03-22,0.087000
2005-03-22,0.085000
2020-11-20,0.010000
2021-12-17,0.858000
2025-06-20,0.029000
2026-02-20,0.021000
2011-08-22,0.035000
2013-03-22,0.032000
2025-10-22,0.026000
2015-08-21,0.016000
2025-01-22,0.017000
2020-07-22,0.027000
2021-10-22,0.012000
2010-12-22,0.035000
2015-07-22,0.021000
1997-12-22,0.570000
1999-12-22,0.420000
2014-07-22,0.024000
2016-05-20,0.032000
2023-02-22,0.035000
2005-12-22,0.232000
2011-07-22,0.026000
2021-08-20,0.020000
2006-12-21,0.184000
2023-01-20,0.011000
2012-03-22,0.033000
2004-06-22,0.080000
2023-11-22,0.029000
2019-07-22,0.020000
2021-09-22,0.016000
2010-09-22,0.028000
2017-05-22,0.050000
2013-12-20,0.022000
2014-01-22,0.024000
2009-03-20,0.093000
2013-11-22,0.015000
2007-09-21,0.109000
2014-06-20,0.030000
2017-08-22,0.026000
2004-12-22,0.171000
2005-09-22,0.102000
2011-04-21,0.024000
2018-07-20,0.027000
2023-10-20,0.019000
2024-12-16,0.621000
2004-09-22,0.075000
2021-07-22,0.017000
2020-04-22,0.022000
2022-06-22,0.028000
2024-10-22,0.007000
2026-07-22,0.020000
2019-05-22,0.039000
2020-03-20,0.030000
2007-12-21,0.506000
2020-05-22,0.024000
2016-08-22,0.038000
2016-11-22,0.029000
2010-08-20,0.030000
2011-12-22,0.030000
2017-01-20,0.028000
2017-09-22,0.034000
2015-05-22,0.036000
2015-12-22,0.062000
2016-12-22,0.022000
2024-04-22,0.016000
2016-07-22,0.023000
2022-08-22,0.022000
2023-04-21,0.012000
2024-09-20,0.012000
2008-06-20,0.107000
2014-12-22,0.049000
2017-07-21,0.018000
2018-01-22,0.017000
1996-12-31,0.043000
2001-12-21,0.433000
2018-05-22,0.046000
2019-10-22,0.024000
2023-05-22,0.023000
2023-09-22,0.025000
2026-03-20,0.023000
2012-01-20,0.026000
2013-01-22,0.019000
2012-07-20,0.025000
2019-06-21,0.046000
2024-06-21,0.016000
2024-08-22,0.018000
2011-09-22,0.026000
2013-10-22,0.017000
2025-02-21,0.021000
2007-03-22,0.091000
2010-03-22,0.097000
2016-02-23,0.025000
2018-02-22,0.027000
2025-12-15,0.806000
1998-12-22,0.620000
2015-09-22,0.028000
2015-02-20,0.023000
2016-09-22,0.013000
2025-03-21,0.035000
2013-04-22,0.022000
2014-11-21,0.027000
2024-07-22,0.017000
2020-06-22,0.012000
2022-12-16,0.802000
2019-09-20,0.030000
2019-11-22,0.025000
2025-11-21,0.029000
2013-07-22,0.022000
2021-01-22,0.013000
2017-11-22,0.027000
2019-08-22,0.033000
2021-03-22,0.025000
2013-02-22,0.017000
2014-08-22,0.027000
2021-02-22,0.018000
2022-07-22,0.015000
2018-03-22,0.038000
2020-01-22,0.019000
2016-03-22,0.022000
2018-08-22,0.031000
2019-01-22,0.023000
2026-04-22,0.024000
2011-11-22,0.032000
2012-08-22,0.031000
2021-04-22,0.020000
2012-12-21,0.043000
2011-03-22,0.032000
2012-06-22,0.034000
2014-05-22,0.030000
2015-06-22,0.028000
2019-04-22,0.023000
2010-07-22,0.026000
2023-06-22,0.034000
2022-01-21,0.017000
2012-02-22,0.026000
2018-09-21,0.032000
2010-11-22,0.029000
2020-02-21,0.020000
2019-12-19,0.234000
2012-04-20,0.025000
2018-12-21,0.837000
2023-07-21,0.021000
2024-02-22,0.025000
2024-05-22,0.016000
2007-06-22,0.103000
2017-10-20,0.021000