f/overrides/event-backup/cphnx-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
22019-12-200.539000
32020-12-210.191000
42022-12-210.084000
52023-03-290.037000
62024-09-260.051000
72024-12-200.452000
82015-06-260.450000
92017-12-210.587000
102025-09-260.053000
112021-03-290.062000
122022-03-290.028000
132023-06-280.322000
142013-12-230.285000
152020-03-270.033000
162014-09-290.027000
172016-12-220.287000
182017-03-280.028000
192017-09-270.029000
202019-06-260.325000
212021-12-220.784000
222013-09-260.037000
232014-03-280.041000
242023-09-270.042000
252023-12-210.121000
262019-09-260.043000
272021-09-280.056000
282025-12-190.485000
292026-03-270.049000
302014-06-260.705000
312015-09-280.030000
322018-09-260.043000
332018-12-210.464000
342020-09-280.027000
352021-06-281.139000
362015-12-220.462000
372018-06-270.588000
382022-06-280.504000
392022-09-280.031000
402024-06-260.249000
412025-06-260.457000
422026-06-260.565000
432015-03-270.034000
442016-03-280.022000
452019-03-270.042000
462020-06-260.502000
472016-09-270.025000
482017-06-270.336000
492018-03-270.038000
502024-03-260.050000
512025-03-270.036000
522014-12-220.762000
532016-06-280.307000