OITracker Cboe delayed data

Contract OI history

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Oct 30, 2026 EXPIRATION

ISRG $397.50 Put

ISRG261030P00397500

Latest saved OI110Oct 23, 2026
Last change+9vs previous saved observation
Saved market days4Oct 15, 2026 onwards
Daily open interest Hover a point for its date and OI
ISRG $397.50 put open interest history 4 saved observations from 2026-10-15 to 2026-10-23. Exact values and changes are listed in the table below. 110550 2026-10-15: 0 OI2026-10-16: 0 OI2026-10-21: 101 OI2026-10-23: 110 OI Oct 15, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

ISRG contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing110+9
Oct 21, 2026101+101
Oct 16, 202600
Oct 15, 20260No prior observation