OITracker Cboe delayed data

Contract OI history

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Dec 18, 2026 EXPIRATION

SERV $9.00 Put

SERV261218P00009000

Latest saved OI655Oct 23, 2026
Last change+13vs previous saved observation
Saved market days6Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
SERV $9.00 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. 6553270 2026-10-09: 596 OI2026-10-13: 610 OI2026-10-14: 611 OI2026-10-16: 621 OI2026-10-20: 642 OI2026-10-23: 655 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, 2026Viewing655+13
Oct 20, 2026642+21
Oct 16, 2026621+10
Oct 14, 2026611+1
Oct 13, 2026610+14
Oct 09, 2026596No prior observation