f/overrides/event-backup/frdax-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
2016-10-03,0.193000
2017-10-02,0.181000
2023-07-20,0.292000
2015-09-01,0.191000
2022-07-20,0.265000
2019-07-01,0.218000
2025-12-22,8.757000
2014-03-03,0.091000
2018-12-03,2.416000
2013-12-02,0.520000
2022-04-20,0.246000
2019-10-01,0.216000
2023-10-20,0.298000
2010-12-01,0.435000
2015-03-02,0.097000
2026-07-20,0.232000
2005-12-01,0.400000
2018-07-02,0.202000
2020-04-01,0.211000
2007-12-03,1.215000
2011-12-01,0.485000
2025-04-21,0.248000
2022-12-20,0.202000
2024-07-22,0.269000
2019-04-01,0.200000
2021-10-01,0.206000
2021-12-01,3.889000
2024-04-22,0.284000
2009-12-01,0.182000
2015-06-01,0.202000
2015-12-01,2.173000
2020-07-01,0.207000
2016-07-01,0.202000
2021-07-01,0.202000
2019-12-02,1.625000
2012-12-03,0.639000
2017-04-03,0.189000
2014-06-02,0.174000
2014-09-02,0.185000
2014-12-01,0.770000
2016-04-01,0.217000
2017-12-01,1.640000
2018-10-01,0.231000
2006-12-01,2.188000
2008-12-01,0.594000
2023-04-20,0.282000
2023-12-20,3.409000
2024-10-21,0.269000
2020-12-01,0.217000
2022-12-15,3.335000
2021-04-01,0.211000
2024-12-20,8.458000
2025-10-20,0.240000
2016-12-01,1.481000
2020-10-01,0.196000
2017-07-03,0.210000
2022-10-20,0.264000
2025-07-21,0.252000
2026-04-20,0.215000
2005-12-27,0.030000
2018-04-02,0.184000