OITracker Cboe delayed data

Contract OI history

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Dec 18, 2026 EXPIRATION

MRX $50.00 Put

MRX261218P00050000

Latest saved OI300Oct 23, 2026
Last change0vs previous saved observation
Saved market days7Oct 08, 2026 onwards
Daily open interest Hover a point for its date and OI
MRX $50.00 put open interest history 7 saved observations from 2026-10-08 to 2026-10-23. Exact values and changes are listed in the table below. 3011500 2026-10-08: 301 OI2026-10-09: 300 OI2026-10-13: 300 OI2026-10-14: 300 OI2026-10-16: 300 OI2026-10-20: 300 OI2026-10-23: 300 OI Oct 08, 2026Oct 23, 2026

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

MRX contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing3000
Oct 20, 20263000
Oct 16, 20263000
Oct 14, 20263000
Oct 13, 20263000
Oct 09, 2026300-1
Oct 08, 2026301No prior observation