OITracker Cboe delayed data

Contract OI history

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Nov 20, 2026 EXPIRATION

SERV $11.00 Put

SERV261120P00011000

Latest saved OI244Oct 23, 2026
Last change0vs previous saved observation
Saved market days6Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
SERV $11.00 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. 2711350 2026-10-09: 271 OI2026-10-13: 271 OI2026-10-14: 271 OI2026-10-16: 271 OI2026-10-20: 244 OI2026-10-23: 244 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, 2026Viewing2440
Oct 20, 2026244-27
Oct 16, 20262710
Oct 14, 20262710
Oct 13, 20262710
Oct 09, 2026271No prior observation