f/overrides/event-backup/mmukx-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
2016-01-29,0.036000
2017-03-31,0.041000
2018-12-31,0.059000
2019-02-28,0.042000
2026-03-26,0.120000
2013-02-28,0.040000
2013-03-28,0.040000
2015-06-30,0.042000
2015-12-31,0.072000
2016-06-30,0.040000
2020-10-30,0.038000
2014-06-30,0.059000
2014-08-29,0.059000
2018-01-31,0.042000
2019-05-31,0.043000
2020-11-30,0.037000
2024-03-26,0.109000
2013-10-31,0.063000
2016-10-31,0.043000
2018-11-30,0.052000
2019-07-31,0.047000
2024-12-12,0.532000
2014-11-28,0.064000
2017-11-30,0.050000
2013-12-31,0.106000
2016-03-31,0.040000
2017-09-29,0.045000
2020-01-31,0.043000
2020-08-31,0.043000
2012-11-30,0.055000
2013-04-30,0.041000
2018-09-28,0.053000
2019-12-19,1.000000
2017-05-31,0.042000
2020-06-30,0.043000
2021-09-23,0.087000
2013-06-28,0.041000
2015-02-27,0.041000
2019-09-30,0.051000
2024-09-26,0.126000
2014-12-31,0.068000
2018-07-31,0.048000
2018-05-31,0.043000
2025-09-25,0.146000
2013-01-31,0.040000
2017-08-31,0.042000
2016-08-31,0.044000
2017-01-31,0.041000
2019-11-29,0.056000
2020-05-29,0.042000
2012-12-11,0.008000
2015-12-22,1.068000
2019-06-28,0.043000
2022-06-23,0.139000
2023-03-23,0.115000
2016-09-30,0.043000
2017-07-31,0.041000
2020-12-31,0.039000
2023-09-21,0.124000
2017-12-29,0.052000
2019-01-31,0.043000
2015-05-29,0.041000
2020-12-17,0.920000
2012-10-31,0.045000
2013-09-30,0.056000
2012-12-31,0.108000
2025-06-26,0.132000
2021-12-16,1.197000
2025-12-11,0.734000
2013-08-30,0.056000
2021-02-26,0.028000
2016-02-29,0.039000
2016-04-29,0.039000
2018-03-29,0.042000
2023-06-22,0.155000
2020-02-28,0.043000
2020-04-30,0.042000
2015-03-31,0.042000
2015-09-30,0.041000
2014-12-22,1.341000
2015-07-31,0.041000
2015-11-30,0.046000
2016-07-29,0.043000
2016-12-30,0.279000
2020-03-31,0.043000
2013-11-29,0.061000
2014-10-31,0.059000
2020-07-31,0.043000
2021-01-29,0.028000
2018-08-31,0.053000
2021-06-24,0.087000
2015-01-30,0.040000
2018-06-29,0.045000
2017-06-30,0.042000
2018-10-31,0.052000
2022-03-24,0.113000
2024-06-25,0.146000
2012-07-31,0.045000
2014-01-31,0.046000
2022-12-15,1.662000
2013-05-31,0.046000
2014-03-31,0.046000
2019-08-30,0.048000
2013-07-31,0.057000
2018-04-30,0.042000
2015-10-30,0.047000
2016-05-31,0.039000
2017-02-28,0.041000
2023-12-14,0.895000
2012-09-28,0.045000
2015-08-31,0.041000
2017-10-31,0.046000
2017-12-21,0.080000
2019-04-30,0.044000
2019-12-31,0.124000
2014-07-31,0.059000
2016-11-30,0.051000
2020-09-30,0.017000
2021-03-31,0.028000
2014-04-30,0.058000
2019-03-29,0.043000
2014-02-28,0.045000
2014-05-30,0.057000
2015-04-30,0.041000
2018-02-28,0.042000
2012-08-31,0.045000
2013-12-10,0.897000
2019-10-31,0.052000
2022-09-22,0.131000
2026-06-25,0.099000
2017-04-28,0.042000
2018-12-20,0.331000
2014-09-30,0.059000
2025-03-25,0.122000