f/overrides/event-backup/fgckx-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
2016-12-27,0.830000
2017-12-26,0.847100
2018-12-26,1.022000
2019-12-27,0.821000
2022-12-27,1.620000
2023-12-26,1.224000
2009-12-11,0.024800
2013-12-06,0.833700
2025-12-26,2.376000
2015-01-16,0.020900
2008-12-12,0.016500
2014-12-05,0.461900
2010-12-30,0.002400
2011-12-16,0.290200
2013-01-11,0.015800
2015-12-04,0.521600
2016-01-15,0.040700
2020-12-29,2.911000
2008-12-30,0.001000
2010-12-10,0.011800
2021-12-28,3.890000
2024-12-26,3.575000
2012-12-14,0.261600
2014-01-10,0.070300