f/overrides/event-backup/cusex-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

1.3 KiB

1DateDividends
22020-09-290.066000
32021-12-131.597000
42022-06-280.080000
52023-12-111.709000
62019-06-270.091000
72012-12-280.084000
82014-06-270.059000
92014-09-290.084000
102016-12-290.921000
112018-03-280.084000
122019-03-280.076000
132019-12-160.871000
142011-09-290.041000
152024-09-270.071000
162014-12-110.713000
172015-12-290.757000
182018-06-280.060000
192019-09-270.082000
202020-03-300.078000
212013-03-270.040000
222018-12-281.566000
232022-03-290.077000
242025-06-270.075000
252012-12-130.008000
262012-09-270.051000
272013-06-270.051000
282023-03-300.094000
292024-06-270.081000
302026-03-300.094000
312012-06-280.041000
322016-06-290.072000
332025-09-290.093000
342012-03-290.034000
352015-06-290.073000
362016-03-300.077000
372016-09-290.075000
382022-12-120.813000
392025-12-153.198000
402026-06-290.067000
412011-12-290.047000
422017-03-300.072000
432015-03-300.042000
442013-12-120.281000
452020-06-290.061000
462021-09-280.068000
472024-03-270.079000
482024-12-163.004000
492011-06-290.048000
502015-09-290.063000
512022-09-280.090000
522025-03-280.068000
532014-03-280.037000
542018-09-270.075000
552013-09-270.046000
562014-12-300.061000
572021-03-290.067000
582013-12-300.058000
592017-06-290.078000
602017-12-281.142000
612020-12-140.626000
622023-06-290.093000
632011-12-150.822000
642021-06-280.068000
652023-09-280.095000
662017-09-280.091000