OITracker Cboe delayed data

Contract OI history

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Oct 30, 2026 EXPIRATION

S $21.00 Call

S261030C00021000

Latest saved OI5Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
S $21.00 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. 1150 2026-10-02: 11 OI2026-10-05: 10 OI2026-10-06: 10 OI2026-10-07: 10 OI2026-10-08: 10 OI2026-10-09: 9 OI2026-10-13: 9 OI2026-10-14: 9 OI2026-10-15: 8 OI2026-10-16: 8 OI2026-10-21: 5 OI2026-10-23: 5 OI Oct 02, 2026Oct 23, 2026

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

S contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing50
Oct 21, 20265-3
Oct 16, 202680
Oct 15, 20268-1
Oct 14, 202690
Oct 13, 202690
Oct 09, 20269-1
Oct 08, 2026100
Oct 07, 2026100
Oct 06, 2026100
Oct 05, 202610-1
Oct 02, 202611No prior observation