OITracker Cboe delayed data

Contract OI history

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Jan 15, 2027 EXPIRATION

ISRG $400.00 Put

ISRG270115P00400000

Latest saved OI547Oct 23, 2026
Last change-14vs 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. 5652820 2026-10-09: 565 OI2026-10-13: 564 OI2026-10-14: 564 OI2026-10-15: 564 OI2026-10-16: 558 OI2026-10-21: 561 OI2026-10-23: 547 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, 2026Viewing547-14
Oct 21, 2026561+3
Oct 16, 2026558-6
Oct 15, 20265640
Oct 14, 20265640
Oct 13, 2026564-1
Oct 09, 2026565No prior observation