f/overrides/event-backup/jlvmx-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
2023-06-28,0.086000
2025-03-27,0.056000
2014-12-19,0.057000
2015-12-11,1.735000
2016-06-28,0.048000
2011-03-31,0.038000
2014-03-31,0.064000
2017-06-28,0.051000
2020-03-27,0.041000
2025-09-26,0.091000
2025-12-18,0.092000
2013-09-30,0.051000
2022-03-29,0.051000
2023-09-27,0.096000
2019-03-27,0.047000
2019-12-19,0.080000
2023-12-13,0.711000
2016-03-29,0.049000
2013-03-28,0.043000
2014-09-30,0.059000
2012-12-18,0.057000
2013-12-12,0.106000
2014-06-30,0.061000
2015-03-27,0.051000
2018-03-27,0.052000
2018-12-19,0.060000
2019-06-26,0.061000
2021-03-29,0.030000
2011-09-30,0.036000
2016-12-20,0.059000
2017-12-20,0.050000
2018-09-26,0.060000
2018-12-12,0.908000
2022-09-28,0.080000
2024-12-19,0.080000
2013-10-16,0.408000
2016-09-28,0.048000
2020-12-18,0.054000
2022-12-20,0.092000
2024-12-12,1.898000
2015-12-21,0.067000
2017-03-29,0.040000
2020-06-26,0.067000
2022-12-13,0.787000
2011-06-30,0.040000
2017-12-13,1.278000
2018-06-27,0.052000
2024-03-26,0.071000
2026-06-26,0.071000
2012-03-30,0.035000
2013-12-20,0.056000
2014-12-12,2.548000
2019-09-26,0.058000
2023-03-29,0.071000
2012-06-29,0.032000
2015-06-26,0.060000
2015-09-28,0.045000
2021-06-28,0.036000
2021-09-28,0.074000
2021-12-13,1.383000
2021-12-20,0.074000
2024-09-26,0.094000
2013-06-28,0.050000
2025-12-11,1.417000
2025-06-26,0.088000
2017-09-27,0.045000
2023-12-20,0.107000
2024-06-26,0.087000
2012-09-28,0.041000
2022-06-28,0.074000
2011-12-20,0.049000
2020-09-28,0.046000
2026-03-27,0.045000
2016-12-14,0.661000