OITracker Cboe delayed data

Contract OI history

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Mar 19, 2027 EXPIRATION

MRTN $12.50 Put

MRTN270319P00012500

Latest saved OI101Oct 23, 2026
Last change+15vs previous saved observation
Saved market days6Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MRTN $12.50 put open interest history 6 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 101500 2026-10-09: 78 OI2026-10-13: 86 OI2026-10-14: 87 OI2026-10-15: 87 OI2026-10-20: 86 OI2026-10-23: 101 OI Oct 09, 2026Oct 23, 2026

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

MRTN contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026101+15
Oct 20, 2026Viewing86-1
Oct 15, 2026870
Oct 14, 202687+1
Oct 13, 202686+8
Oct 09, 202678No prior observation