f/overrides/event-backup/archx-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

1.2 KiB

1DateDividends
22016-06-280.038000
32020-12-300.040000
42021-03-300.038000
52024-03-270.057000
62024-06-270.058000
72025-12-290.419000
82018-06-280.042000
92023-03-300.056000
102015-12-290.045000
112023-09-280.051000
122005-12-280.071000
132009-12-230.201000
142013-12-270.162000
152014-03-310.052000
162015-09-290.040000
172025-09-290.064000
182026-06-290.062000
192015-06-290.043000
202018-09-270.046000
212021-12-300.192000
222017-06-290.060000
232017-09-280.039000
242017-12-280.266000
252019-06-270.059000
262019-09-270.051000
272011-12-280.214000
282012-12-280.249000
292016-12-290.130000
302019-12-300.092000
312020-06-290.056000
322024-12-300.565000
332020-09-290.045000
342021-06-290.045000
352022-03-300.039000
362023-06-290.050000
372016-09-280.041000
382017-03-300.041000
392018-03-280.042000
402015-03-300.030000
412022-09-290.042000
422024-09-270.059000
432026-03-300.060000
442006-12-270.517000
452014-09-300.065000
462020-03-300.052000
472010-12-280.182000
482022-06-290.047000
492022-12-290.346000
502021-09-290.034000
512007-12-210.494000
522014-12-300.035000
532019-03-280.052000
542014-06-300.038000
552018-12-280.123000
562025-06-270.074000
572008-12-220.278000
582016-03-290.041000
592023-12-280.058000
602025-03-280.059000