f/overrides/event-backup/bizd-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

56 lines
1.1 KiB
Plaintext

Date,Dividends
2019-12-30,0.366000
2020-04-01,0.356000
2022-12-28,0.423000
2015-12-29,0.398000
2016-04-01,0.410000
2016-10-03,0.352000
2020-07-01,0.385000
2026-04-01,0.482000
2015-07-01,0.380000
2019-07-01,0.386000
2021-04-01,0.371000
2022-10-03,0.410000
2019-04-01,0.410000
2021-07-01,0.318000
2021-12-29,0.361000
2026-07-01,0.239000
2013-07-01,0.250000
2018-07-02,0.350000
2023-10-02,0.437000
2022-04-01,0.347000
2025-10-01,0.401000
2017-04-03,0.347000
2017-07-03,0.370000
2018-04-02,0.383000
2023-07-03,0.419000
2024-07-01,0.453000
2013-04-01,0.207000
2016-07-01,0.406000
2017-10-02,0.374000
2023-04-03,0.435000
2024-10-01,0.463000
2025-07-01,0.439000
2020-12-29,0.325000
2013-10-01,0.330000
2025-04-01,0.430000
2014-07-01,0.340000
2019-10-01,0.367000
2023-12-27,0.468000
2024-04-01,0.458000
2014-04-01,0.340000
2014-10-01,0.415000
2014-12-29,0.431000
2018-12-27,0.407000
2013-12-27,0.356000
2015-04-01,0.330000
2015-10-01,0.330000
2017-12-27,0.425000
2020-10-01,0.360000
2025-12-29,0.402000
2022-07-01,0.407000
2021-10-01,0.351000
2018-10-01,0.388000
2016-12-28,0.365000
2024-12-27,0.445000