OITracker Cboe delayed data

Contract OI history

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Jan 21, 2028 EXPIRATION

SMR $28.00 Put

SMR280121P00028000

Latest saved OI0Oct 23, 2026
Last change-11vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
SMR $28.00 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. 168840 2026-10-02: 168 OI2026-10-05: 168 OI2026-10-06: 168 OI2026-10-07: 168 OI2026-10-08: 168 OI2026-10-09: 168 OI2026-10-13: 159 OI2026-10-14: 159 OI2026-10-15: 159 OI2026-10-16: 159 OI2026-10-21: 11 OI2026-10-23: 0 OI Oct 02, 2026Oct 23, 2026

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

SMR contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 20260-11
Oct 21, 2026Viewing11-148
Oct 16, 20261590
Oct 15, 20261590
Oct 14, 20261590
Oct 13, 2026159-9
Oct 09, 20261680
Oct 08, 20261680
Oct 07, 20261680
Oct 06, 20261680
Oct 05, 20261680
Oct 02, 2026168No prior observation