f/overrides/event-backup/bktsx-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

875 B

1DateDividends
22018-07-190.051000
32018-12-140.119000
42021-10-070.064000
52017-04-120.048000
62020-04-080.070000
72022-10-130.071000
82024-04-100.068000
92024-07-180.076000
102025-10-090.091000
112025-12-160.096000
122019-07-180.065000
132019-04-100.060000
142022-07-140.071000
152022-12-130.090000
162024-12-120.112000
172026-04-150.084000
182026-07-220.096000
192018-04-110.053000
202016-10-130.043000
212016-12-150.069000
222017-12-150.114000
232020-12-100.090000
242021-07-150.052000
252025-07-170.089000
262015-10-150.026000
272018-10-110.072000
282019-10-100.071000
292019-12-120.130000
302020-07-160.051000
312021-12-090.187000
322022-04-130.058000
332023-10-120.075000
342017-07-200.050000
352025-04-090.076000
362020-10-080.061000
372021-04-070.047000
382016-07-210.018000
392017-10-120.065000
402023-04-120.070000
412023-07-200.070000
422023-12-140.106000
432024-10-100.085000
442016-04-130.037000