OITracker Cboe delayed data

Contract OI history

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Dec 18, 2026 EXPIRATION

SERV $2.00 Put

SERV261218P00002000

Latest saved OI216Oct 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 $2.00 put open interest history 6 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 2161080 2026-10-09: 29 OI2026-10-13: 29 OI2026-10-14: 29 OI2026-10-16: 29 OI2026-10-20: 215 OI2026-10-23: 216 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, 2026Viewing216+1
Oct 20, 2026215+186
Oct 16, 2026290
Oct 14, 2026290
Oct 13, 2026290
Oct 09, 202629No prior observation