OITracker Cboe delayed data

Contract OI history

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Nov 20, 2026 EXPIRATION

S $20.00 Put

S261120P00020000

Latest saved OI1,642Oct 23, 2026
Last change-3vs 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. 1,6458220 2026-10-02: 150 OI2026-10-05: 147 OI2026-10-06: 147 OI2026-10-07: 148 OI2026-10-08: 148 OI2026-10-09: 148 OI2026-10-13: 148 OI2026-10-14: 148 OI2026-10-15: 148 OI2026-10-16: 148 OI2026-10-21: 1,645 OI2026-10-23: 1,642 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, 2026Viewing1,642-3
Oct 21, 20261,645+1,497
Oct 16, 20261480
Oct 15, 20261480
Oct 14, 20261480
Oct 13, 20261480
Oct 09, 20261480
Oct 08, 20261480
Oct 07, 2026148+1
Oct 06, 20261470
Oct 05, 2026147-3
Oct 02, 2026150No prior observation