OITracker Cboe delayed data

Contract OI history

Back to SERV

Jan 21, 2028 EXPIRATION

SERV $25.00 Call

SERV280121C00025000

Latest saved OI1,801Oct 23, 2026
Last change0vs previous saved observation
Saved market days6Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
SERV $25.00 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. 1,8019000 2026-10-09: 1,785 OI2026-10-13: 1,795 OI2026-10-14: 1,788 OI2026-10-16: 1,788 OI2026-10-20: 1,801 OI2026-10-23: 1,801 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, 2026Viewing1,8010
Oct 20, 20261,801+13
Oct 16, 20261,7880
Oct 14, 20261,788-7
Oct 13, 20261,795+10
Oct 09, 20261,785No prior observation