OITracker Cboe delayed data

Contract OI history

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Dec 18, 2026 EXPIRATION

S $20.00 Put

S261218P00020000

Latest saved OI1,395Oct 23, 2026
Last change+12vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
S $20.00 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. 1,4137060 2026-10-02: 1,413 OI2026-10-05: 1,413 OI2026-10-06: 1,402 OI2026-10-07: 1,401 OI2026-10-08: 1,401 OI2026-10-09: 1,373 OI2026-10-13: 1,371 OI2026-10-14: 1,371 OI2026-10-15: 1,381 OI2026-10-16: 1,381 OI2026-10-21: 1,383 OI2026-10-23: 1,395 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, 2026Viewing1,395+12
Oct 21, 20261,383+2
Oct 16, 20261,3810
Oct 15, 20261,381+10
Oct 14, 20261,3710
Oct 13, 20261,371-2
Oct 09, 20261,373-28
Oct 08, 20261,4010
Oct 07, 20261,401-1
Oct 06, 20261,402-11
Oct 05, 20261,4130
Oct 02, 20261,413No prior observation