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Contract OI history

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Jan 15, 2027 EXPIRATION

MRK $155.00 Call

MRK270115C00155000

Latest saved OI1,542Oct 23, 2026
Last change+14vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
MRK $155.00 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. 1,5427710 2026-10-02: 1,274 OI2026-10-05: 1,276 OI2026-10-06: 1,287 OI2026-10-07: 1,288 OI2026-10-08: 1,288 OI2026-10-09: 1,315 OI2026-10-13: 1,330 OI2026-10-14: 1,330 OI2026-10-15: 1,332 OI2026-10-16: 1,510 OI2026-10-21: 1,528 OI2026-10-23: 1,542 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, 2026Viewing1,542+14
Oct 21, 20261,528+18
Oct 16, 20261,510+178
Oct 15, 20261,332+2
Oct 14, 20261,3300
Oct 13, 20261,330+15
Oct 09, 20261,315+27
Oct 08, 20261,2880
Oct 07, 20261,288+1
Oct 06, 20261,287+11
Oct 05, 20261,276+2
Oct 02, 20261,274No prior observation