OITracker Cboe delayed data

Contract OI history

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Dec 18, 2026 EXPIRATION

PHR $20.00 Call

PHR261218C00020000

Latest saved OI2,153Oct 23, 2026
Last change-6vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
PHR $20.00 call open interest history 11 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 2,1591,0790 2026-10-02: 2,159 OI2026-10-05: 2,159 OI2026-10-06: 2,159 OI2026-10-07: 2,159 OI2026-10-08: 2,159 OI2026-10-09: 2,159 OI2026-10-13: 2,159 OI2026-10-14: 2,159 OI2026-10-16: 2,159 OI2026-10-20: 2,159 OI2026-10-23: 2,153 OI Oct 02, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

PHR contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing2,153-6
Oct 20, 20262,1590
Oct 16, 20262,1590
Oct 14, 20262,1590
Oct 13, 20262,1590
Oct 09, 20262,1590
Oct 08, 20262,1590
Oct 07, 20262,1590
Oct 06, 20262,1590
Oct 05, 20262,1590
Oct 02, 20262,159No prior observation