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Contract OI history

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Jan 21, 2028 EXPIRATION

TMO $550.00 Put

TMO280121P00550000

Latest saved OI210Oct 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 $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. 2101050 2026-10-02: 127 OI2026-10-05: 127 OI2026-10-06: 127 OI2026-10-07: 198 OI2026-10-08: 198 OI2026-10-09: 198 OI2026-10-13: 198 OI2026-10-14: 198 OI2026-10-15: 198 OI2026-10-16: 198 OI2026-10-21: 210 OI2026-10-23: 210 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, 20262100
Oct 21, 2026Viewing210+12
Oct 16, 20261980
Oct 15, 20261980
Oct 14, 20261980
Oct 13, 20261980
Oct 09, 20261980
Oct 08, 20261980
Oct 07, 2026198+71
Oct 06, 20261270
Oct 05, 20261270
Oct 02, 2026127No prior observation