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Contract OI history

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Dec 18, 2026 EXPIRATION

TMO $550.00 Put

TMO261218P00550000

Latest saved OI227Oct 23, 2026
Last change+28vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
TMO $550.00 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. 2271130 2026-10-02: 107 OI2026-10-05: 107 OI2026-10-06: 107 OI2026-10-07: 107 OI2026-10-08: 107 OI2026-10-09: 134 OI2026-10-13: 134 OI2026-10-14: 134 OI2026-10-15: 136 OI2026-10-16: 136 OI2026-10-21: 199 OI2026-10-23: 227 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, 2026227+28
Oct 21, 2026Viewing199+63
Oct 16, 20261360
Oct 15, 2026136+2
Oct 14, 20261340
Oct 13, 20261340
Oct 09, 2026134+27
Oct 08, 20261070
Oct 07, 20261070
Oct 06, 20261070
Oct 05, 20261070
Oct 02, 2026107No prior observation