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Contract OI history

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Apr 16, 2027 EXPIRATION

ISRG $400.00 Put

ISRG270416P00400000

Latest saved OI152Oct 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 $400.00 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. 153760 2026-10-09: 53 OI2026-10-13: 153 OI2026-10-14: 153 OI2026-10-15: 153 OI2026-10-16: 153 OI2026-10-21: 152 OI2026-10-23: 152 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, 2026Viewing1520
Oct 21, 2026152-1
Oct 16, 20261530
Oct 15, 20261530
Oct 14, 20261530
Oct 13, 2026153+100
Oct 09, 202653No prior observation