OITracker Cboe delayed data

Contract OI history

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Mar 19, 2027 EXPIRATION

S $20.00 Put

S270319P00020000

Latest saved OI170Oct 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 $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. 170850 2026-10-02: 97 OI2026-10-05: 97 OI2026-10-06: 148 OI2026-10-07: 148 OI2026-10-08: 148 OI2026-10-09: 147 OI2026-10-13: 158 OI2026-10-14: 158 OI2026-10-15: 158 OI2026-10-16: 146 OI2026-10-21: 170 OI2026-10-23: 170 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, 2026Viewing1700
Oct 21, 2026170+24
Oct 16, 2026146-12
Oct 15, 20261580
Oct 14, 20261580
Oct 13, 2026158+11
Oct 09, 2026147-1
Oct 08, 20261480
Oct 07, 20261480
Oct 06, 2026148+51
Oct 05, 2026970
Oct 02, 202697No prior observation