f/overrides/event-backup/btmkx-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

595 B

1DateDividends
22022-01-030.022000
32023-07-200.025000
42011-12-140.325000
52018-07-190.007000
62025-12-160.726000
72023-12-140.460000
82015-12-110.279000
92020-12-100.287000
102021-07-150.029000
112022-12-130.348000
122024-07-180.041000
132012-12-170.350000
142020-07-160.005000
152022-07-140.002000
162015-07-160.002000
172021-12-090.456000
182013-07-180.010000
192014-07-170.010000
202014-12-120.088000
212013-12-130.308000
222015-01-020.005000
232024-12-120.484000
242011-07-210.023000
252012-07-190.009000
262016-12-150.328000
272019-12-120.463000
282016-07-210.002000
292017-12-150.347000
302018-12-140.532000