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Contract OI history

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Jan 15, 2027 EXPIRATION

CMBT $17.50 Put

CMBT270115P00017500

Latest saved OI640Oct 23, 2026
Last change0vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
CMBT $17.50 put open interest history 11 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 6453220 2026-10-02: 576 OI2026-10-05: 576 OI2026-10-06: 576 OI2026-10-07: 576 OI2026-10-08: 576 OI2026-10-09: 602 OI2026-10-13: 602 OI2026-10-15: 645 OI2026-10-16: 640 OI2026-10-20: 640 OI2026-10-23: 640 OI Oct 02, 2026Oct 23, 2026

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

CMBT contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing6400
Oct 20, 20266400
Oct 16, 2026640-5
Oct 15, 2026645+43
Oct 13, 20266020
Oct 09, 2026602+26
Oct 08, 20265760
Oct 07, 20265760
Oct 06, 20265760
Oct 05, 20265760
Oct 02, 2026576No prior observation