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Contract OI history

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Nov 20, 2026 EXPIRATION

ISRG $390.00 Put

ISRG261120P00390000

Latest saved OI558Oct 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 $390.00 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. 5582790 2026-10-09: 475 OI2026-10-13: 515 OI2026-10-14: 515 OI2026-10-15: 521 OI2026-10-16: 520 OI2026-10-21: 533 OI2026-10-23: 558 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, 2026Viewing558+25
Oct 21, 2026533+13
Oct 16, 2026520-1
Oct 15, 2026521+6
Oct 14, 20265150
Oct 13, 2026515+40
Oct 09, 2026475No prior observation