OITracker Cboe delayed data

Contract OI history

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Jan 21, 2028 EXPIRATION

SMR $20.00 Put

SMR280121P00020000

Latest saved OI443Oct 23, 2026
Last change-1vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
SMR $20.00 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. 8824410 2026-10-02: 882 OI2026-10-05: 877 OI2026-10-06: 877 OI2026-10-07: 877 OI2026-10-08: 877 OI2026-10-09: 876 OI2026-10-13: 874 OI2026-10-14: 874 OI2026-10-15: 874 OI2026-10-16: 444 OI2026-10-21: 444 OI2026-10-23: 443 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, 2026Viewing443-1
Oct 21, 20264440
Oct 16, 2026444-430
Oct 15, 20268740
Oct 14, 20268740
Oct 13, 2026874-2
Oct 09, 2026876-1
Oct 08, 20268770
Oct 07, 20268770
Oct 06, 20268770
Oct 05, 2026877-5
Oct 02, 2026882No prior observation