OITracker Cboe delayed data

Contract OI history

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Jan 15, 2027 EXPIRATION

SERV $20.00 Call

SERV270115C00020000

Latest saved OI3,436Oct 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 $20.00 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. 3,4511,7250 2026-10-09: 3,429 OI2026-10-13: 3,428 OI2026-10-14: 3,427 OI2026-10-16: 3,451 OI2026-10-20: 3,436 OI2026-10-23: 3,436 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, 2026Viewing3,4360
Oct 20, 20263,436-15
Oct 16, 20263,451+24
Oct 14, 20263,427-1
Oct 13, 20263,428-1
Oct 09, 20263,429No prior observation