f/overrides/event-backup/epi-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

1.0 KiB

1DateDividends
22009-09-210.045000
32015-03-230.031000
42017-12-260.026000
52018-09-250.111000
62022-03-250.115000
72020-09-220.035000
82021-06-240.085000
92009-12-210.006000
102011-06-220.062000
112012-03-260.010000
122016-06-200.125000
132018-12-240.008000
142020-03-240.017000
152016-09-260.070000
162016-12-230.006000
172020-12-210.081000
182019-12-230.041000
192020-06-230.094000
202009-03-230.007000
212009-06-220.002000
222010-09-200.065000
232014-09-220.068000
242017-09-260.080000
252018-12-280.028000
262021-03-250.043000
272023-06-260.060000
282008-12-220.091000
292013-09-230.063000
302019-09-240.130000
312024-12-260.121000
322012-09-240.083000
332013-06-240.068000
342014-06-230.059000
352015-12-210.024000
362018-06-250.085000
372019-03-260.120000
382010-06-280.065000
392012-06-250.045000
402014-03-240.099000
412015-06-220.067000
422017-03-270.075000
432021-09-240.110000
442018-03-200.061000
452021-12-270.192000
462010-12-220.013000
472011-09-260.098000
482012-12-240.024000
492015-09-210.116000
502016-03-210.010000
512017-06-260.055000
522022-06-241.845000