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Contract OI history

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Oct 23, 2026 EXPIRATION

ISRG $435.00 Put

ISRG261023P00435000

Latest saved OI269Oct 23, 2026
Last change-36vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
ISRG $435.00 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. 3051520 2026-10-09: 0 OI2026-10-13: 0 OI2026-10-14: 0 OI2026-10-15: 0 OI2026-10-16: 0 OI2026-10-21: 305 OI2026-10-23: 269 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, 2026Viewing269-36
Oct 21, 2026305+305
Oct 16, 202600
Oct 15, 202600
Oct 14, 202600
Oct 13, 202600
Oct 09, 20260No prior observation