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Contract OI history

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Dec 18, 2026 EXPIRATION

ISRG $250.00 Put

ISRG261218P00250000

Latest saved OI180Oct 23, 2026
Last change0vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
ISRG $250.00 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. 180900 2026-10-09: 179 OI2026-10-13: 179 OI2026-10-14: 179 OI2026-10-15: 179 OI2026-10-16: 179 OI2026-10-21: 180 OI2026-10-23: 180 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, 2026Viewing1800
Oct 21, 2026180+1
Oct 16, 20261790
Oct 15, 20261790
Oct 14, 20261790
Oct 13, 20261790
Oct 09, 2026179No prior observation