OITracker Cboe delayed data

Contract OI history

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Mar 19, 2027 EXPIRATION

S $18.00 Put

S270319P00018000

Latest saved OI77Oct 23, 2026
Last change+5vs 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. 77380 2026-10-02: 53 OI2026-10-05: 53 OI2026-10-06: 53 OI2026-10-07: 53 OI2026-10-08: 53 OI2026-10-09: 53 OI2026-10-13: 53 OI2026-10-14: 53 OI2026-10-15: 53 OI2026-10-16: 58 OI2026-10-21: 72 OI2026-10-23: 77 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, 2026Viewing77+5
Oct 21, 202672+14
Oct 16, 202658+5
Oct 15, 2026530
Oct 14, 2026530
Oct 13, 2026530
Oct 09, 2026530
Oct 08, 2026530
Oct 07, 2026530
Oct 06, 2026530
Oct 05, 2026530
Oct 02, 202653No prior observation