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Contract OI history

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Nov 20, 2026 EXPIRATION

CMBT $17.50 Put

CMBT261120P00017500

Latest saved OI495Oct 23, 2026
Last change+261vs 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. 4952470 2026-10-02: 79 OI2026-10-05: 79 OI2026-10-06: 79 OI2026-10-07: 79 OI2026-10-08: 76 OI2026-10-09: 76 OI2026-10-13: 76 OI2026-10-15: 103 OI2026-10-16: 118 OI2026-10-20: 234 OI2026-10-23: 495 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, 2026Viewing495+261
Oct 20, 2026234+116
Oct 16, 2026118+15
Oct 15, 2026103+27
Oct 13, 2026760
Oct 09, 2026760
Oct 08, 202676-3
Oct 07, 2026790
Oct 06, 2026790
Oct 05, 2026790
Oct 02, 202679No prior observation