OITracker Cboe delayed data

Contract OI history

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Nov 20, 2026 EXPIRATION

SERV $10.00 Put

SERV261120P00010000

Latest saved OI441Oct 23, 2026
Last change-2vs previous saved observation
Saved market days6Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
SERV $10.00 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. 4532260 2026-10-09: 453 OI2026-10-13: 451 OI2026-10-14: 451 OI2026-10-16: 451 OI2026-10-20: 443 OI2026-10-23: 441 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, 2026Viewing441-2
Oct 20, 2026443-8
Oct 16, 20264510
Oct 14, 20264510
Oct 13, 2026451-2
Oct 09, 2026453No prior observation