OITracker Cboe delayed data

Contract OI history

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Oct 23, 2026 EXPIRATION

SERV $8.50 Put

SERV261023P00008500

Latest saved OI31Oct 23, 2026
Last change-82vs previous saved observation
Saved market days6Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
SERV $8.50 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. 3181590 2026-10-09: 318 OI2026-10-13: 206 OI2026-10-14: 183 OI2026-10-16: 183 OI2026-10-20: 113 OI2026-10-23: 31 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, 2026Viewing31-82
Oct 20, 2026113-70
Oct 16, 20261830
Oct 14, 2026183-23
Oct 13, 2026206-112
Oct 09, 2026318No prior observation