f/overrides/event-backup/lpsfx-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
2013-03-28,0.053000
2016-06-30,0.163000
2019-03-28,0.053000
2011-12-30,0.198000
2012-06-29,0.150000
2015-06-30,0.310000
2018-03-29,0.086000
2020-06-30,0.288000
2021-12-31,2.772000
2023-06-30,0.105000
2008-12-31,0.025000
2009-06-30,0.119000
2014-12-31,2.148000
2015-12-30,1.346000
2016-03-31,0.063000
2024-12-24,1.522000
2013-06-28,0.198000
2021-09-30,0.008000
2008-06-30,0.240000
2010-09-30,0.052000
2020-09-30,0.085000
2022-03-31,0.151000
2025-07-17,0.182000
2010-12-31,0.118000
2017-06-30,1.026000
2018-09-28,0.067000
2023-12-22,0.601000
2008-09-30,0.073000
2009-12-31,0.124000
2014-06-30,0.546000
2021-06-30,0.815000
2009-03-31,0.126000
2009-09-30,0.057000
2011-06-30,0.144000
2014-09-30,0.074000
2018-12-31,1.581000
2022-07-14,0.111000
2024-06-28,0.394000
2019-06-28,0.092000
2020-03-31,0.047000
2023-03-31,0.046000
2012-03-30,0.057000
2016-12-30,0.130000
2022-06-30,0.082000
2023-09-29,0.088000
2026-07-22,0.139000
2011-03-31,0.053000
2011-09-30,0.056000
2012-09-28,0.070000
2014-03-31,0.097000
2017-03-31,0.066000
2020-12-31,0.416000
2021-03-31,0.133000
2013-12-31,1.432000
2016-09-30,0.058000
2017-09-29,0.075000
2017-12-29,1.543000
2019-12-31,0.970000
2012-12-31,0.639000
2015-03-31,0.068000
2013-09-30,0.066000
2018-06-29,0.419000
2019-09-27,0.062000
2025-12-29,1.021000
2015-09-30,0.082000