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Contract OI history

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Dec 17, 2027 EXPIRATION

MRK $130.00 Call

MRK271217C00130000

Latest saved OI255Oct 23, 2026
Last change-4vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
MRK $130.00 call open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 2691340 2026-10-02: 269 OI2026-10-05: 269 OI2026-10-06: 268 OI2026-10-07: 262 OI2026-10-08: 262 OI2026-10-09: 261 OI2026-10-13: 260 OI2026-10-14: 260 OI2026-10-15: 259 OI2026-10-16: 259 OI2026-10-21: 259 OI2026-10-23: 255 OI Oct 02, 2026Oct 23, 2026

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

MRK contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing255-4
Oct 21, 20262590
Oct 16, 20262590
Oct 15, 2026259-1
Oct 14, 20262600
Oct 13, 2026260-1
Oct 09, 2026261-1
Oct 08, 20262620
Oct 07, 2026262-6
Oct 06, 2026268-1
Oct 05, 20262690
Oct 02, 2026269No prior observation