OITracker Cboe delayed data

Contract OI history

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Nov 20, 2026 EXPIRATION

S $18.00 Put

S261120P00018000

Latest saved OI59Oct 23, 2026
Last change-10vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
S $18.00 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. 69340 2026-10-02: 42 OI2026-10-05: 43 OI2026-10-06: 43 OI2026-10-07: 43 OI2026-10-08: 43 OI2026-10-09: 43 OI2026-10-13: 43 OI2026-10-14: 43 OI2026-10-15: 43 OI2026-10-16: 44 OI2026-10-21: 69 OI2026-10-23: 59 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, 2026Viewing59-10
Oct 21, 202669+25
Oct 16, 202644+1
Oct 15, 2026430
Oct 14, 2026430
Oct 13, 2026430
Oct 09, 2026430
Oct 08, 2026430
Oct 07, 2026430
Oct 06, 2026430
Oct 05, 202643+1
Oct 02, 202642No prior observation