f/overrides/event-backup/fregx-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
2013-09-30,0.145000
2014-12-15,1.040000
2015-12-15,0.966000
2016-03-31,0.174000
2016-06-30,0.172000
2018-03-29,0.129000
2017-09-29,0.138000
2020-09-30,0.105000
2024-09-30,0.108000
2024-12-30,0.227000
2017-06-30,0.144000
2018-12-28,0.112000
2022-03-31,0.101000
2023-06-30,0.136000
2016-09-30,0.210000
2018-06-29,0.134000
2019-12-16,1.805000
2021-06-30,0.110000
2021-12-15,3.022000
2022-12-15,0.836000
2017-12-15,2.164000
2018-09-14,0.327000
2018-12-17,0.310000
2024-12-16,0.781000
2021-09-30,0.118000
2013-09-16,0.113000
2015-06-30,0.213000
2015-09-16,0.250000
2015-09-30,0.145000
2013-12-13,1.159000
2015-03-31,0.135000
2020-06-30,0.095000
2023-12-28,0.142000
2013-12-30,0.167000
2020-10-14,0.156000
2024-10-10,0.066000
2015-12-30,0.187000
2016-09-15,0.309000
2022-12-29,0.928000
2024-03-28,0.123000
2025-12-30,0.116000
2017-03-31,0.129000
2018-09-28,0.128000
2020-12-30,0.103000
2016-12-29,0.208000
2019-09-12,0.041000
2021-12-30,0.136000
2022-06-30,0.106000
2023-09-29,0.119000
2025-09-30,0.130000
2014-12-30,0.224000
2020-03-31,0.119000
2024-06-28,0.119000
2025-03-31,0.112000
2014-06-30,0.148000
2017-12-28,0.188000
2019-09-30,0.137000
2019-12-30,0.110000
2021-03-31,0.108000
2023-03-31,0.106000
2025-06-30,0.140000
2026-03-31,0.117000
2013-06-28,0.125000
2016-12-15,1.358000
2019-03-29,0.142000
2019-06-28,0.161000
2022-09-30,0.166000
2022-10-13,0.785000
2026-06-30,0.116000
2014-03-31,0.130000
2014-09-30,0.135000
2023-10-11,0.031000
2025-12-15,0.369000