f/overrides/event-backup/hunax-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,ctime
2014-07-30,0.016,2017-08-22
2015-03-30,0.004,2017-08-22
2014-01-30,0.01,2017-08-22
2014-04-29,0.025,2017-08-22
2015-02-26,0.009,2017-08-22
2016-04-26,0.007,2017-08-22
2016-10-26,0.006,2017-08-22
2015-06-29,0.012,2017-08-22
2015-12-04,0.359,2017-08-22
2014-10-30,0.012,2017-08-22
2014-12-30,0.012,2017-08-22
2016-01-26,0.006,2017-08-22
2016-07-26,0.013,2017-08-22
2016-11-25,0.007,2017-08-22
2015-09-29,0.004,2017-08-22
2015-04-29,0.007,2017-08-22
2016-08-26,0.011,2017-08-22
2014-11-26,0.011,2017-08-22
2016-05-25,0.011,2017-08-22
2014-05-29,0.021,2017-08-22
2016-03-28,0.005,2017-08-22
2015-01-29,0.011,2017-08-22
2015-07-30,0.015,2017-08-22
2016-02-24,0.006,2017-08-22
2014-02-27,0.01,2017-08-22
2014-08-28,0.012,2017-08-22
2014-12-05,0.4,2017-08-22
2016-06-27,0.012,2017-08-22
2015-10-29,0.007,2017-08-22
2015-12-30,0.005,2017-08-22
2014-03-28,0.016,2017-08-22
2015-11-27,0.006,2017-08-22
2014-09-29,0.008,2017-08-22
2016-09-27,0.005,2017-08-22
2014-06-27,0.016,2017-08-22
2015-08-28,0.01,2017-08-22
2015-05-28,0.011,2017-08-22