OITracker Cboe delayed data

Contract OI history

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Dec 18, 2026 EXPIRATION

SERV $4.00 Call

SERV261218C00004000

Latest saved OI1,108Oct 23, 2026
Last change+18vs 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. 1,1085540 2026-10-09: 675 OI2026-10-13: 682 OI2026-10-14: 770 OI2026-10-16: 793 OI2026-10-20: 1,090 OI2026-10-23: 1,108 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, 2026Viewing1,108+18
Oct 20, 20261,090+297
Oct 16, 2026793+23
Oct 14, 2026770+88
Oct 13, 2026682+7
Oct 09, 2026675No prior observation