OITracker Cboe delayed data

Contract OI history

Back to ISRG

Nov 20, 2026 EXPIRATION

ISRG $400.00 Put

ISRG261120P00400000

Latest saved OI326Oct 23, 2026
Last change+11vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
ISRG $400.00 put open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 3261630 2026-10-09: 86 OI2026-10-13: 204 OI2026-10-14: 204 OI2026-10-15: 201 OI2026-10-16: 202 OI2026-10-21: 315 OI2026-10-23: 326 OI Oct 09, 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, 2026Viewing326+11
Oct 21, 2026315+113
Oct 16, 2026202+1
Oct 15, 2026201-3
Oct 14, 20262040
Oct 13, 2026204+118
Oct 09, 202686No prior observation