f/overrides/event-backup/fcntx-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
1988-12-15,0.032000
2003-12-26,0.004000
1998-12-31,0.445000
2019-02-08,0.106000
2025-02-07,0.175000
1993-12-17,0.215000
2010-12-17,0.030400
2021-02-12,0.400000
1984-12-17,0.029000
1995-12-22,0.322000
1999-02-05,0.052000
2014-12-12,0.617100
2025-12-05,1.090000
2020-02-07,0.097000
2023-02-10,0.186000
1983-12-19,0.045000
1991-12-20,0.117000
2001-12-28,0.022000
2006-02-03,0.128000
2009-12-18,0.018300
2002-12-27,0.005000
2005-12-23,0.119000
1993-02-05,0.028000
2016-02-05,0.063700
2018-12-07,0.821000
2021-12-10,1.627000
2020-12-11,1.246000
2006-12-22,0.560000
2011-12-28,0.000400
2012-12-14,0.083700
2013-02-08,0.074500
2014-02-07,0.097000
2011-02-04,0.008500
2019-12-13,0.464000
1997-02-07,0.071000
2000-12-29,0.539000
2004-02-06,0.001000
2005-02-04,0.001000
2008-12-26,0.021000
1986-02-10,0.012000
1992-02-07,0.065000
1998-02-06,0.007000
2004-12-23,0.003500
2016-12-09,0.311500
2017-02-10,0.067600
1990-12-21,0.009000
1999-12-22,0.998000
2002-06-07,0.230000
2007-12-28,0.425000
2011-12-16,0.009800
2009-02-13,0.001500
2015-12-11,0.432100
2017-12-08,0.687700
1980-12-15,0.051000
1986-12-29,0.013000
1996-12-20,0.183000
1997-12-26,0.420000
2007-02-02,0.067000
2022-02-04,0.215000
2024-02-16,0.013000
1996-02-02,0.200000
2013-12-13,0.671500
2000-02-04,0.147000
2008-02-08,0.065000
2018-02-09,0.185800
1981-12-14,0.063000
1982-12-20,0.050000
1985-12-23,0.025000
1989-12-14,0.132000
1992-12-18,0.147000
2024-12-06,0.868000
2026-02-06,0.042000
1994-02-04,0.022000
2010-02-05,0.009000
2015-02-06,0.095000
2022-12-09,1.220000
2023-12-08,0.499000