f/overrides/event-backup/lmlsx-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
2016-12-08,0.216000
2016-12-22,0.119000
2017-09-29,0.115000
2019-06-28,0.150000
2019-12-19,1.784000
2021-12-20,1.735000
2022-09-30,0.155000
2015-03-31,0.149000
2026-03-31,0.144000
2023-06-30,0.133000
2017-12-06,0.446000
2017-12-21,0.133000
2018-03-28,0.140000
2018-06-28,0.138000
2026-06-30,0.120000
2015-06-30,0.169000
2022-03-31,0.114000
2022-12-20,0.198000
2023-03-31,0.132000
2024-03-28,0.150000
2025-09-30,0.126000
2017-06-30,0.132000
2021-09-30,0.118000
2023-12-19,0.881000
2020-06-30,0.122000
2015-12-10,0.413000
2020-12-18,2.280000
2021-03-31,0.103000
2021-06-30,0.079000
2024-06-28,0.161000
2024-09-30,0.167000
2014-12-23,0.147000
2018-12-06,1.783000
2018-12-20,0.134000
2019-03-29,0.162000
2020-03-31,0.164000
2020-09-30,0.125000
2025-06-30,0.157000
2018-09-27,0.140000
2015-12-22,0.170000
2016-06-30,0.125000
2017-03-31,0.128000
2024-12-20,4.157000
2015-09-30,0.149000
2016-03-31,0.129000
2016-09-30,0.111000
2019-09-30,0.145000
2022-06-30,0.115000
2023-09-29,0.161000
2025-03-31,0.149000
2025-12-19,4.230000
2013-06-26,0.130000