OITracker Cboe delayed data

Contract OI history

Back to BX

Jan 21, 2028 EXPIRATION

BX $55.00 Put

BX280121P00055000

Latest saved OI261Oct 23, 2026
Last change+7vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BX $55.00 put open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 2611300 2026-10-02: 204 OI2026-10-05: 204 OI2026-10-06: 224 OI2026-10-07: 224 OI2026-10-08: 224 OI2026-10-09: 224 OI2026-10-13: 224 OI2026-10-14: 234 OI2026-10-15: 249 OI2026-10-16: 259 OI2026-10-21: 254 OI2026-10-23: 261 OI Oct 02, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

BX contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing261+7
Oct 21, 2026254-5
Oct 16, 2026259+10
Oct 15, 2026249+15
Oct 14, 2026234+10
Oct 13, 20262240
Oct 09, 20262240
Oct 08, 20262240
Oct 07, 20262240
Oct 06, 2026224+20
Oct 05, 20262040
Oct 02, 2026204No prior observation