OITracker Cboe delayed data

Contract OI history

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Jan 15, 2027 EXPIRATION

SERV $4.00 Call

SERV270115C00004000

Latest saved OI1,210Oct 23, 2026
Last change+572vs 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. 1,2106050 2026-10-09: 374 OI2026-10-13: 481 OI2026-10-14: 556 OI2026-10-16: 622 OI2026-10-20: 638 OI2026-10-23: 1,210 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, 2026Viewing1,210+572
Oct 20, 2026638+16
Oct 16, 2026622+66
Oct 14, 2026556+75
Oct 13, 2026481+107
Oct 09, 2026374No prior observation