f/overrides/event-backup/ardtx-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

1.1 KiB

1DateDividends
22014-06-170.037000
32013-09-240.026000
42014-09-230.044000
52022-09-270.038000
62024-06-250.076000
72018-06-260.062000
82023-12-210.412000
92026-06-110.086000
102018-03-270.040000
112017-12-280.153000
122017-10-190.093000
132015-06-230.028000
142018-09-250.040000
152014-12-300.226000
162019-09-240.037000
172020-03-240.036000
182020-06-230.040000
192020-09-290.575000
202022-06-280.061000
212022-12-280.475000
222023-06-270.054000
232015-09-290.032000
242026-03-120.041000
252025-03-270.065000
262018-12-310.254000
272021-06-290.044000
282016-06-280.035000
292016-03-220.026000
302019-03-260.038000
312022-03-290.056000
322024-03-260.061000
332016-12-290.201000
342020-12-290.124000
352013-12-300.130000
362016-09-270.030000
372017-03-280.031000
382019-12-300.876000
392025-06-100.470000
402025-12-190.544000
412014-03-250.026000
422021-12-281.009000
432015-03-240.270000
442018-12-270.692000
452021-09-280.034000
462024-09-240.041000
472025-09-250.080000
482017-09-260.037000
492017-06-270.039000
502021-03-300.020000
512024-12-200.364000
522019-06-250.046000
532023-09-260.051000
542015-12-300.108000
552023-03-280.040000