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Contract OI history

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Nov 20, 2026 EXPIRATION

TMO $685.00 Put

TMO261120P00685000

Latest saved OI179Oct 23, 2026
Last change+164vs previous saved observation
Saved market days2Oct 21, 2026 onwards
Daily open interest Hover a point for its date and OI
TMO $685.00 put open interest history 2 saved observations from 2026-10-21 to 2026-10-23. Exact values and changes are listed in the table below. 179890 2026-10-21: 15 OI2026-10-23: 179 OI Oct 21, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

TMO contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing179+164
Oct 21, 202615No prior observation