f/overrides/event-backup/kbwr-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
2014-03-21,0.063170
2016-06-17,0.215420
2019-12-23,0.423080
2020-12-21,0.356460
2012-06-15,0.125260
2017-06-16,0.250150
2026-06-22,0.223190
2016-12-16,0.338900
2018-09-24,0.325180
2019-03-18,0.236480
2023-09-18,0.416740
2013-09-20,0.077510
2023-06-20,0.368620
2014-06-20,0.179330
2016-03-18,0.066140
2018-12-24,0.371770
2020-06-22,0.360750
2013-12-20,0.253900
2014-12-19,0.301240
2017-03-17,0.065730
2017-12-18,0.366890
2018-06-18,0.249810
2023-12-18,0.407390
2013-06-21,0.159630
2015-09-18,0.117870
2013-03-15,0.100500
2019-06-24,0.315460
2024-09-23,0.400620
2015-06-19,0.209550
2024-12-23,0.410370
2025-03-24,0.372700
2025-12-22,0.448000
2017-09-18,0.209560
2024-06-24,0.400810
2012-03-16,0.347300
2012-12-21,0.196970
2015-03-20,0.155620
2020-03-23,0.337530
2021-09-20,0.369110
2022-12-19,0.402230
2025-09-22,0.402860
2015-12-18,0.307300
2021-06-21,0.257340
2022-09-19,0.363780
2023-03-20,0.389450
2024-03-18,0.399250
2025-06-23,0.418650
2022-06-21,0.349720
2026-03-23,0.454020
2011-12-16,0.128720
2014-09-19,0.170700
2019-09-23,0.342030
2020-09-21,0.328460
2021-03-22,0.300830
2021-12-20,0.358490
2012-09-21,0.148350
2016-09-16,0.217250
2018-03-19,0.152470
2022-03-21,0.317130