f/overrides/event-backup/blv-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
2007-05-01,0.300000
2021-12-01,0.242000
2024-04-01,0.281000
2011-10-03,0.305000
2015-05-01,0.298000
2015-10-01,0.286000
2017-08-01,0.290000
2020-05-01,0.260000
2011-04-01,0.337000
2015-06-01,0.310000
2019-12-02,0.267000
2021-06-01,0.248000
2023-06-01,0.256000
2009-06-01,0.330000
2014-07-01,0.309000
2014-11-03,0.301000
2021-12-23,0.456000
2025-07-01,0.275000
2008-03-03,0.315000
2009-11-02,0.336000
2016-08-01,0.337000
2022-11-01,0.251000
2023-02-01,0.234000
2023-08-01,0.262000
2021-02-01,0.259000
2023-10-02,0.250000
2008-10-01,0.324000
2013-03-01,0.288000
2014-05-01,0.300000
2019-04-01,0.298000
2024-09-03,0.265000
2008-12-24,0.335000
2016-02-01,0.302000
2014-10-01,0.293000
2026-08-03,0.281000
2008-12-01,0.325000
2013-02-01,0.310000
2016-12-22,0.452000
2022-07-01,0.239000
2019-02-01,0.285000
2024-12-24,0.275000
2010-12-27,1.004000
2017-05-01,0.288000
2019-06-03,0.284000
2021-03-01,0.236000
2011-12-01,0.318000
2012-09-04,0.321000
2016-04-01,0.298000
2016-09-01,0.301000
2020-12-23,3.132000
2011-06-01,0.321000
2019-09-03,0.286000
2026-07-01,0.272000
2014-04-01,0.327000
2016-07-01,0.282000
2007-10-01,0.335000
2007-11-01,0.323000
2007-12-03,0.334000
2010-03-01,0.303000
2014-08-01,0.304000
2019-12-23,0.461000
2008-07-01,0.340000
2014-02-03,0.320000
2020-06-01,0.277000
2024-06-03,0.270000
2008-11-03,0.329000
2024-02-01,0.278000
2024-07-01,0.268000
2014-03-03,0.284000
2017-10-02,0.288000
2020-08-03,0.263000
2013-12-02,0.319000
2025-02-03,0.270000
2023-03-01,0.237000
2010-06-01,0.320000
2015-03-02,0.279000
2022-04-01,0.359000
2015-08-03,0.319000
2017-04-03,0.291000
2017-06-01,0.294000
2025-10-01,0.265000
2009-03-02,0.343000
2009-07-01,0.335000
2010-07-01,0.324000
2013-06-03,0.311000
2016-05-02,0.290000
2010-09-01,0.316000
2022-09-01,0.244000
2022-12-23,0.253000
2025-05-01,0.260000
2022-02-01,0.245000
2023-12-01,0.256000
2007-06-01,0.255000
2010-05-03,0.330000
2011-12-23,1.130000
2014-06-02,0.316000
2017-12-26,0.293000
2018-03-01,0.272000
2023-12-22,0.262000
2009-10-01,0.301000
2013-05-01,0.305000
2013-09-03,0.320000
2018-11-01,0.290000
2023-11-01,0.264000
2026-05-01,0.274000
2019-11-01,0.282000
2011-07-01,0.325000
2019-08-01,0.288000
2021-11-01,0.247000
2025-08-01,0.280000
2011-05-02,0.328000
2025-04-01,0.276000
2020-11-02,0.263000
2008-04-01,0.346000
2009-09-01,0.338000
2010-11-01,0.343000
2011-09-01,0.331000
2013-08-01,0.327000
2014-09-02,0.280000
2008-09-02,0.331000
2012-05-01,0.319000
2017-07-03,0.281000
2022-08-01,0.245000
2008-02-01,0.348000
2009-12-28,0.337000
2018-09-04,0.292000
2019-03-01,0.293000
2025-12-18,0.279000
2021-08-02,0.249000
2024-11-01,0.271000
2017-09-01,0.297000
2018-12-03,0.285000
2024-03-01,0.246000
2018-10-01,0.281000
2019-07-01,0.283000
2012-07-02,0.312000
2024-08-01,0.267000
2011-11-01,0.324000
2021-07-01,0.241000
2024-05-17,0.281000
2010-10-01,0.324000
2011-08-01,0.344000
2015-11-02,0.301000
2016-10-03,0.284000
2022-10-03,0.235000
2023-05-01,0.245000
2008-08-01,0.328000
2020-12-01,0.253000
2013-12-24,0.328000
2024-10-01,0.258000
2007-07-02,0.235000
2010-04-01,0.345000
2012-03-01,0.307000
2013-07-01,0.310000
2020-02-03,0.280000
2007-09-04,0.345000
2008-05-01,0.336000
2021-04-01,0.558000
2008-06-02,0.347000
2009-05-01,0.334000
2018-07-02,0.288000
2022-03-01,0.226000
2018-06-01,0.295000
2024-05-01,0.260000
2025-03-03,0.250000
2009-04-01,0.342000
2010-08-02,0.341000
2020-07-01,0.267000
2023-04-03,0.259000
2023-07-03,0.245000
2015-12-23,0.442000
2022-06-01,0.247000
2009-08-03,0.329000
2017-11-01,0.293000
2018-05-01,0.286000
2020-09-01,0.269000
2007-08-01,0.283000
2012-08-01,0.320000
2019-10-01,0.280000
2025-09-02,0.274000
2025-12-01,0.268000
2014-12-23,0.324000
2015-07-01,0.302000
2018-12-24,0.263000
2026-06-01,0.282000
2013-10-01,0.324000
2013-11-01,0.319000
2015-12-01,0.304000
2017-12-01,0.283000
2026-02-02,0.277000
2015-09-01,0.243000
2016-11-01,0.293000
2018-08-01,0.293000
2021-05-03,0.244000
2020-03-02,0.260000
2021-10-01,0.239000
2012-04-02,0.472000
2012-06-01,0.311000
2014-12-01,0.301000
2015-04-01,0.401000
2016-12-01,0.299000
2019-05-01,0.275000
2025-06-02,0.276000
2010-12-01,0.338000
2012-12-24,1.383000
2016-06-01,0.292000
2022-12-01,0.240000
2026-04-01,0.284000
2011-02-01,0.334000
2024-12-02,0.265000
2018-04-02,0.440000
2022-05-02,0.236000
2023-09-01,0.261000
2025-11-03,0.272000
2007-12-24,0.330000
2010-02-01,0.343000
2011-03-01,0.304000
2012-10-01,0.310000
2013-04-01,0.502000
2009-02-02,0.344000
2012-12-03,0.310000
2015-02-02,0.309000
2017-03-01,0.269000
2021-09-01,0.249000
2026-03-02,0.251000
2009-12-01,0.337000
2012-02-01,0.300000
2017-02-01,0.289000
2018-02-01,0.277000
2020-04-01,0.606000
2020-10-01,0.269000