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Contract OI history

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Dec 18, 2026 EXPIRATION

TMO $400.00 Put

TMO261218P00400000

Latest saved OI810Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
TMO $400.00 put open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 8414200 2026-10-02: 841 OI2026-10-05: 841 OI2026-10-06: 841 OI2026-10-07: 841 OI2026-10-08: 841 OI2026-10-09: 841 OI2026-10-13: 841 OI2026-10-14: 841 OI2026-10-15: 841 OI2026-10-16: 841 OI2026-10-21: 810 OI2026-10-23: 810 OI Oct 02, 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, 20268100
Oct 21, 2026Viewing810-31
Oct 16, 20268410
Oct 15, 20268410
Oct 14, 20268410
Oct 13, 20268410
Oct 09, 20268410
Oct 08, 20268410
Oct 07, 20268410
Oct 06, 20268410
Oct 05, 20268410
Oct 02, 2026841No prior observation