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Contract OI history

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Dec 18, 2026 EXPIRATION

ISRG $360.00 Put

ISRG261218P00360000

Latest saved OI331Oct 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 $360.00 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. 3311650 2026-10-09: 322 OI2026-10-13: 320 OI2026-10-14: 320 OI2026-10-15: 320 OI2026-10-16: 320 OI2026-10-21: 320 OI2026-10-23: 331 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, 2026Viewing331+11
Oct 21, 20263200
Oct 16, 20263200
Oct 15, 20263200
Oct 14, 20263200
Oct 13, 2026320-2
Oct 09, 2026322No prior observation