f/overrides/event-backup/fltb-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
2019-04-26,0.119000
2020-02-26,0.087000
2020-11-25,0.049000
2021-11-26,0.040000
2014-12-29,0.068000
2015-09-28,0.065000
2017-03-29,0.072000
2018-12-27,0.092000
2025-09-29,0.178000
2025-12-30,0.194000
2026-02-26,0.165000
2022-09-28,0.073000
2022-10-27,0.086000
2022-11-28,0.086000
2025-06-27,0.190000
2019-09-26,0.118000
2021-09-28,0.036000
2023-03-29,0.112000
2023-04-26,0.121000
2014-11-26,0.065000
2015-07-29,0.177000
2017-09-27,0.072000
2018-10-29,0.113000
2026-05-28,0.180000
2017-10-27,0.074000
2020-03-27,0.092000
2021-02-24,0.046000
2025-10-30,0.184000
2023-07-27,0.120000
2024-04-26,0.170000
2015-03-27,0.047000
2017-07-27,0.072000
2018-01-29,0.075000
2022-05-26,0.049000
2016-09-28,0.062000
2019-02-26,0.111000
2015-12-29,0.066000
2018-02-26,0.082000
2022-02-24,0.046000
2023-08-29,0.135000
2024-01-29,0.146000
2023-11-28,0.147000
2025-02-27,0.160000
2015-11-25,0.041000
2016-11-28,0.046000
2016-12-08,0.050000
2020-12-29,0.045000
2015-05-27,0.048000
2020-05-27,0.085000
2025-05-29,0.183000
2026-01-29,0.175000
2026-04-29,0.190000
2015-06-26,0.018000
2017-12-27,0.074000
2021-10-27,0.036000
2023-05-26,0.120000
2021-04-28,0.040000
2022-04-27,0.046000
2025-08-28,0.189000
2019-05-29,0.110000
2019-08-28,0.114000
2025-07-30,0.184000
2026-06-29,0.192000
2015-01-28,0.066000
2020-04-28,0.097000
2020-07-29,0.087000
2021-07-28,0.049000
2020-01-29,0.075000
2020-08-27,0.051000
2026-07-30,0.196000
2014-10-28,0.040000
2016-01-27,0.031000
2016-02-25,0.055000
2018-04-26,0.113000
2022-07-27,0.063000
2024-10-30,0.168000
2025-04-29,0.192000
2015-04-28,0.121000
2017-11-28,0.073000
2018-11-28,0.163000
2022-06-28,0.054000
2016-10-27,0.063000
2021-01-27,0.044000
2022-12-28,0.125000
2024-02-27,0.152000
2015-08-27,0.066000
2017-06-28,0.073000
2021-12-29,0.038000
2018-05-29,0.081000
2018-09-26,0.109000
2019-06-26,0.115000
2023-02-24,0.100000
2019-11-26,0.083000
2024-03-26,0.162000
2025-01-30,0.175000
2022-03-29,0.042000
2024-07-30,0.175000
2024-11-27,0.175000
2015-02-25,0.055000
2018-03-27,0.084000
2018-08-29,0.109000
2023-09-27,0.141000
2017-01-27,0.096000
2018-06-27,0.151000
2019-07-29,0.112000
2025-11-26,0.168000
2021-03-29,0.036000
2023-06-28,0.130000
2016-12-28,0.064000
2018-07-27,0.063000
2019-03-27,0.111000
2019-10-29,0.102000
2019-12-27,0.150000
2024-06-27,0.180000
2024-12-30,0.192000
2015-10-28,0.041000
2017-08-29,0.071000
2019-01-29,0.112000
2023-01-27,0.156000
2016-06-28,0.069000
2016-07-27,0.062000
2023-12-27,0.150000
2024-09-27,0.169000
2017-05-26,0.072000
2020-09-28,0.052000
2020-10-28,0.050000
2021-08-27,0.033000
2026-03-30,0.191000
2017-02-24,0.065000
2021-05-26,0.026000
2022-01-27,0.038000
2024-08-29,0.173000
2020-06-26,0.057000
2022-08-29,0.073000
2024-05-30,0.176000
2025-03-28,0.188000
2016-05-26,0.099000
2016-08-29,0.061000
2021-06-28,0.036000
2023-10-27,0.140000