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Contract OI history

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Dec 18, 2026 EXPIRATION

ISRG $640.00 Call

ISRG261218C00640000

Latest saved OI218Oct 23, 2026
Last change+1vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
ISRG $640.00 call open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 2181090 2026-10-09: 218 OI2026-10-13: 218 OI2026-10-14: 218 OI2026-10-15: 218 OI2026-10-16: 213 OI2026-10-21: 217 OI2026-10-23: 218 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, 2026Viewing218+1
Oct 21, 2026217+4
Oct 16, 2026213-5
Oct 15, 20262180
Oct 14, 20262180
Oct 13, 20262180
Oct 09, 2026218No prior observation