f/overrides/event-backup/frifx-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
2003-09-05,0.030000
2007-06-01,0.100000
2009-06-05,0.080000
2010-06-04,0.149000
2010-09-03,0.126000
2012-12-27,0.008000
2003-12-12,0.260000
2005-03-04,0.060000
2005-12-16,0.360000
2006-09-08,0.360000
2016-12-16,0.201000
2021-06-04,0.001000
2023-07-07,0.146000
2026-04-01,0.110000
2005-06-03,0.130000
2015-03-06,0.012000
2017-12-15,0.294000
2022-12-16,0.198000
2024-12-20,0.172000
2004-05-07,0.120000
2010-03-05,0.040000
2013-03-01,0.047000
2021-09-03,0.035000
2009-09-04,0.120000
2016-06-03,0.128000
2022-06-03,0.136000
2018-09-07,0.331000
2025-07-11,0.149000
2004-12-10,0.250000
2011-03-04,0.054000
2012-06-01,0.123000
2014-06-06,0.123000
2012-12-14,0.267000
2018-12-14,0.251000
2019-09-06,0.256000
2019-12-20,0.285000
2005-09-09,0.330000
2009-12-18,0.210000
2010-12-30,0.005000
2012-03-02,0.055000
2021-12-17,0.166000
2023-04-05,0.128000
2006-03-03,0.050000
2013-12-13,0.300000
2015-06-05,0.130000
2018-03-02,0.006000
2025-10-03,0.148000
2003-05-09,0.070000
2011-12-16,0.241000
2020-06-05,0.088000
2024-07-05,0.135000
2017-03-03,0.037000
2019-06-07,0.136000
2024-04-05,0.111000
2003-08-08,0.110000
2007-09-07,0.460000
2008-06-06,0.120000
2015-09-11,0.228000
2022-09-09,0.340000
2008-12-19,0.200000
2014-03-07,0.041000
2020-03-06,0.009000
2020-09-04,0.116000
2011-09-02,0.199000
2015-12-18,0.254000
2017-09-08,0.194000
2019-03-08,0.033000
2004-02-06,0.100000
2006-06-02,0.200000
2007-03-02,0.100000
2007-12-21,0.250000
2024-10-04,0.137000
2016-12-30,0.010000
2021-03-05,0.001000
2025-04-04,0.111000
2009-12-30,0.005000
2010-12-17,0.189000
2014-09-05,0.313000
2016-03-04,0.040000
2018-06-01,0.122000
2020-12-18,0.349000
2023-10-06,0.130000
2023-12-15,0.174000
2008-03-07,0.070000
2009-03-06,0.030000
2011-06-03,0.132000
2013-06-07,0.137000
2026-07-10,0.161000
2008-09-05,0.150000
2012-09-07,0.293000
2013-09-06,0.297000
2025-12-19,0.164000
2014-12-22,0.303000
2016-09-09,0.208000
2017-06-02,0.131000
2004-09-03,0.310000
2006-12-15,0.260000
2008-12-30,0.040000
2011-12-30,0.002000