OITracker Cboe delayed data

Contract OI history

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Dec 18, 2026 EXPIRATION

S $18.00 Put

S261218P00018000

Latest saved OI465Oct 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 $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. 4652320 2026-10-02: 146 OI2026-10-05: 145 OI2026-10-06: 145 OI2026-10-07: 145 OI2026-10-08: 145 OI2026-10-09: 145 OI2026-10-13: 145 OI2026-10-14: 145 OI2026-10-15: 145 OI2026-10-16: 145 OI2026-10-21: 465 OI2026-10-23: 465 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, 2026Viewing4650
Oct 21, 2026465+320
Oct 16, 20261450
Oct 15, 20261450
Oct 14, 20261450
Oct 13, 20261450
Oct 09, 20261450
Oct 08, 20261450
Oct 07, 20261450
Oct 06, 20261450
Oct 05, 2026145-1
Oct 02, 2026146No prior observation