f/overrides/event-backup/nlgax-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

130 lines
2.5 KiB
Plaintext

Date,Dividends
2018-09-26,0.045000
2019-09-26,0.051000
2023-06-28,0.163000
2003-11-20,0.021000
2011-09-28,0.064000
2004-09-28,0.048000
2022-12-21,0.110000
2025-06-26,0.152000
2001-05-21,0.044000
2012-09-27,0.066000
2024-06-26,0.069000
2024-03-26,0.054000
1996-12-23,0.265000
2000-09-25,0.126000
2023-09-27,0.049000
2014-09-29,0.031000
2018-03-27,0.042000
2018-06-27,0.325000
2026-03-27,0.061000
1999-09-28,0.111000
2001-03-26,0.076000
2014-03-28,0.038000
2024-12-20,0.105000
2007-03-29,0.075000
2011-03-28,0.057000
2020-12-21,0.208000
2025-09-26,0.059000
2012-12-21,0.388000
2017-12-21,0.276000
2020-03-27,0.035000
2024-09-26,0.062000
2017-06-27,0.102000
2021-03-29,0.034000
2022-09-28,0.033000
2010-03-26,0.062000
2016-12-22,0.064000
1998-03-26,0.073000
2006-06-29,0.227000
2007-09-27,0.086000
2001-11-14,0.003000
2010-09-28,0.063000
2011-12-22,0.070000
2012-06-27,0.086000
2016-09-27,0.029000
2007-12-28,0.271000
2009-12-22,0.092000
2012-03-27,0.055000
2013-09-26,0.044000
1997-12-29,0.132000
2004-05-19,0.060000
2005-05-18,0.404000
1998-09-24,0.097000
2001-09-25,0.095000
2004-12-29,0.154000
2003-06-26,0.036000
2007-06-28,0.270000
2015-06-26,0.214000
1997-06-25,0.188000
1998-12-23,0.106000
2002-06-24,0.061000
2018-12-21,0.305000
1997-03-25,0.048000
2004-06-28,0.045000
2014-06-26,0.617000
2000-03-23,0.077000
2006-09-28,0.083000
2025-12-19,0.132000
2013-06-26,0.078000
2019-03-27,0.040000
2019-06-26,0.125000
2010-12-22,0.066000
2013-03-12,0.046000
2022-03-29,0.023000
2002-12-27,0.109000
2003-05-20,0.038000
2008-09-29,0.079000
2013-12-23,0.486000
2002-09-26,0.052000
2004-11-19,0.058000
2005-03-29,0.037000
2000-12-22,0.146000
2009-09-28,0.071000
2020-09-28,0.032000
2015-09-28,0.038000
2016-03-28,0.037000
2023-12-21,0.116000
1998-06-25,0.061000
1999-11-09,0.092000
2005-09-28,0.067000
2006-12-28,0.219000
2019-12-20,0.240000
2022-06-28,0.397000
2010-06-24,0.072000
2011-06-24,0.074000
2020-06-26,0.298000
2005-06-28,0.078000
2006-03-30,0.070000
2008-12-23,0.096000
2021-12-22,0.476000
1997-09-25,0.100000
2001-12-26,0.117000
2014-12-22,0.403000
2015-03-27,0.048000
2017-09-27,0.036000
1999-06-28,0.115000
2000-06-20,0.141000
2008-03-28,0.069000
2017-03-28,0.058000
2026-06-26,0.286000
2003-12-29,0.121000
2008-06-27,0.482000
2009-03-27,0.077000
2016-06-28,0.237000
2023-03-29,0.041000
2000-11-16,0.225000
2002-11-19,0.022000
2009-06-24,0.079000
1999-12-31,0.181000
2003-09-26,0.044000
2021-06-28,0.503000
2021-09-28,0.028000
2002-03-25,0.046000
2005-12-29,0.443000
2015-12-22,0.251000
2025-03-27,0.058000
2001-06-25,0.078000
2003-03-27,0.020000
2004-03-29,0.018000