OITracker Cboe delayed data

Contract OI history

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Dec 18, 2026 EXPIRATION

SERV $5.00 Call

SERV261218C00005000

Latest saved OI596Oct 23, 2026
Last change+8vs previous saved observation
Saved market days6Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
SERV $5.00 call open interest history 6 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 5962980 2026-10-09: 550 OI2026-10-13: 578 OI2026-10-14: 578 OI2026-10-16: 580 OI2026-10-20: 588 OI2026-10-23: 596 OI Oct 09, 2026Oct 23, 2026

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

SERV contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing596+8
Oct 20, 2026588+8
Oct 16, 2026580+2
Oct 14, 20265780
Oct 13, 2026578+28
Oct 09, 2026550No prior observation