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Contract OI history

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Nov 20, 2026 EXPIRATION

ISRG $405.00 Put

ISRG261120P00405000

Latest saved OI447Oct 23, 2026
Last change+25vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
ISRG $405.00 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. 4472230 2026-10-09: 138 OI2026-10-13: 141 OI2026-10-14: 141 OI2026-10-15: 140 OI2026-10-16: 140 OI2026-10-21: 422 OI2026-10-23: 447 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, 2026Viewing447+25
Oct 21, 2026422+282
Oct 16, 20261400
Oct 15, 2026140-1
Oct 14, 20261410
Oct 13, 2026141+3
Oct 09, 2026138No prior observation