OITracker Cboe delayed data

Contract OI history

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Nov 20, 2026 EXPIRATION

SM $27.50 Put

SM261120P00027500

Latest saved OI193Oct 23, 2026
Last change0vs previous saved observation
Saved market days10Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
SM $27.50 put open interest history 10 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 2011000 2026-10-02: 200 OI2026-10-05: 201 OI2026-10-07: 201 OI2026-10-08: 201 OI2026-10-09: 201 OI2026-10-13: 191 OI2026-10-15: 193 OI2026-10-16: 193 OI2026-10-21: 193 OI2026-10-23: 193 OI Oct 02, 2026Oct 23, 2026

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

SM contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 20261930
Oct 21, 2026Viewing1930
Oct 16, 20261930
Oct 15, 2026193+2
Oct 13, 2026191-10
Oct 09, 20262010
Oct 08, 20262010
Oct 07, 20262010
Oct 05, 2026201+1
Oct 02, 2026200No prior observation