OITracker Cboe delayed data

Contract OI history

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Oct 23, 2026 EXPIRATION

SERV $4.00 Call

SERV261023C00004000

Latest saved OI493Oct 23, 2026
Last change+50vs 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. 4932460 2026-10-09: 308 OI2026-10-13: 372 OI2026-10-14: 386 OI2026-10-16: 431 OI2026-10-20: 443 OI2026-10-23: 493 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, 2026Viewing493+50
Oct 20, 2026443+12
Oct 16, 2026431+45
Oct 14, 2026386+14
Oct 13, 2026372+64
Oct 09, 2026308No prior observation