OITracker Cboe delayed data

Contract OI history

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Nov 13, 2026 EXPIRATION

SERV $4.00 Call

SERV261113C00004000

Latest saved OI336Oct 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
SERV $4.00 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. 3361680 2026-10-09: 51 OI2026-10-13: 80 OI2026-10-14: 107 OI2026-10-16: 113 OI2026-10-20: 321 OI2026-10-23: 336 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, 2026Viewing336+15
Oct 20, 2026321+208
Oct 16, 2026113+6
Oct 14, 2026107+27
Oct 13, 202680+29
Oct 09, 202651No prior observation