OITracker Cboe delayed data

Contract OI history

Back to SO

Nov 20, 2026 EXPIRATION

SO $87.50 Call

SO261120C00087500

Latest saved OI900Oct 23, 2026
Last change-868vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
SO $87.50 call open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 1,7918950 2026-10-02: 412 OI2026-10-05: 596 OI2026-10-06: 612 OI2026-10-07: 1,712 OI2026-10-08: 1,714 OI2026-10-09: 1,720 OI2026-10-13: 1,757 OI2026-10-14: 1,757 OI2026-10-15: 1,771 OI2026-10-16: 1,791 OI2026-10-21: 1,768 OI2026-10-23: 900 OI Oct 02, 2026Oct 23, 2026

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

SO contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing900-868
Oct 21, 20261,768-23
Oct 16, 20261,791+20
Oct 15, 20261,771+14
Oct 14, 20261,7570
Oct 13, 20261,757+37
Oct 09, 20261,720+6
Oct 08, 20261,714+2
Oct 07, 20261,712+1,100
Oct 06, 2026612+16
Oct 05, 2026596+184
Oct 02, 2026412No prior observation