OITracker Cboe delayed data

Contract OI history

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Feb 19, 2027 EXPIRATION

SM $40.00 Put

SM270219P00040000

Latest saved OI80Oct 23, 2026
Last change+2vs previous saved observation
Saved market days10Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
SM $40.00 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. 80400 2026-10-02: 69 OI2026-10-05: 69 OI2026-10-07: 69 OI2026-10-08: 69 OI2026-10-09: 69 OI2026-10-13: 69 OI2026-10-15: 77 OI2026-10-16: 77 OI2026-10-21: 78 OI2026-10-23: 80 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, 2026Viewing80+2
Oct 21, 202678+1
Oct 16, 2026770
Oct 15, 202677+8
Oct 13, 2026690
Oct 09, 2026690
Oct 08, 2026690
Oct 07, 2026690
Oct 05, 2026690
Oct 02, 202669No prior observation