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Contract OI history

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Mar 19, 2027 EXPIRATION

CB $350.00 Put

CB270319P00350000

Latest saved OI182Oct 23, 2026
Last change+1vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
CB $350.00 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. 182910 2026-10-02: 17 OI2026-10-05: 20 OI2026-10-06: 20 OI2026-10-07: 65 OI2026-10-08: 69 OI2026-10-09: 70 OI2026-10-13: 70 OI2026-10-14: 74 OI2026-10-15: 84 OI2026-10-16: 182 OI2026-10-21: 181 OI2026-10-23: 182 OI Oct 02, 2026Oct 23, 2026

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

CB contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing182+1
Oct 21, 2026181-1
Oct 16, 2026182+98
Oct 15, 202684+10
Oct 14, 202674+4
Oct 13, 2026700
Oct 09, 202670+1
Oct 08, 202669+4
Oct 07, 202665+45
Oct 06, 2026200
Oct 05, 202620+3
Oct 02, 202617No prior observation