OITracker Cboe delayed data

Contract OI history

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Jan 21, 2028 EXPIRATION

SERV $30.00 Call

SERV280121C00030000

Latest saved OI919Oct 23, 2026
Last change+1vs previous saved observation
Saved market days6Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
SERV $30.00 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. 9224610 2026-10-09: 919 OI2026-10-13: 921 OI2026-10-14: 922 OI2026-10-16: 922 OI2026-10-20: 918 OI2026-10-23: 919 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, 2026Viewing919+1
Oct 20, 2026918-4
Oct 16, 20269220
Oct 14, 2026922+1
Oct 13, 2026921+2
Oct 09, 2026919No prior observation