OITracker Cboe delayed data

Contract OI history

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Dec 18, 2026 EXPIRATION

SERV $5.00 Put

SERV261218P00005000

Latest saved OI738Oct 23, 2026
Last change-16vs previous saved observation
Saved market days6Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
SERV $5.00 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. 7543770 2026-10-09: 751 OI2026-10-13: 751 OI2026-10-14: 751 OI2026-10-16: 751 OI2026-10-20: 754 OI2026-10-23: 738 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, 2026Viewing738-16
Oct 20, 2026754+3
Oct 16, 20267510
Oct 14, 20267510
Oct 13, 20267510
Oct 09, 2026751No prior observation