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Contract OI history

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Dec 18, 2026 EXPIRATION

B $35.00 Put

B261218P00035000

Latest saved OI9,844Oct 23, 2026
Last change+26vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
B $35.00 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. 9,8444,9220 2026-10-02: 9,678 OI2026-10-05: 9,679 OI2026-10-06: 9,679 OI2026-10-07: 9,680 OI2026-10-08: 9,680 OI2026-10-09: 9,681 OI2026-10-13: 9,683 OI2026-10-14: 9,683 OI2026-10-15: 9,813 OI2026-10-16: 9,818 OI2026-10-21: 9,818 OI2026-10-23: 9,844 OI Oct 02, 2026Oct 23, 2026

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

B contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing9,844+26
Oct 21, 20269,8180
Oct 16, 20269,818+5
Oct 15, 20269,813+130
Oct 14, 20269,6830
Oct 13, 20269,683+2
Oct 09, 20269,681+1
Oct 08, 20269,6800
Oct 07, 20269,680+1
Oct 06, 20269,6790
Oct 05, 20269,679+1
Oct 02, 20269,678No prior observation