OITracker Cboe delayed data

Contract OI history

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Nov 06, 2026 EXPIRATION

S $21.00 Put

S261106P00021000

Latest saved OI20Oct 23, 2026
Last change+8vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
S $21.00 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. 20100 2026-10-02: 1 OI2026-10-05: 1 OI2026-10-06: 1 OI2026-10-07: 2 OI2026-10-08: 2 OI2026-10-09: 3 OI2026-10-13: 7 OI2026-10-14: 7 OI2026-10-15: 7 OI2026-10-16: 8 OI2026-10-21: 12 OI2026-10-23: 20 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, 2026Viewing20+8
Oct 21, 202612+4
Oct 16, 20268+1
Oct 15, 202670
Oct 14, 202670
Oct 13, 20267+4
Oct 09, 20263+1
Oct 08, 202620
Oct 07, 20262+1
Oct 06, 202610
Oct 05, 202610
Oct 02, 20261No prior observation