OITracker Cboe delayed data

Contract OI history

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Jan 15, 2027 EXPIRATION

PFE $28.00 Call

PFE270115C00028000

Latest saved OI10,993Oct 23, 2026
Last change-88vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
PFE $28.00 call open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 11,1985,5990 2026-10-02: 10,787 OI2026-10-05: 10,840 OI2026-10-06: 10,737 OI2026-10-07: 10,791 OI2026-10-08: 10,791 OI2026-10-09: 10,773 OI2026-10-13: 10,521 OI2026-10-14: 10,521 OI2026-10-15: 10,770 OI2026-10-16: 11,198 OI2026-10-21: 11,081 OI2026-10-23: 10,993 OI Oct 02, 2026Oct 23, 2026

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

PFE contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing10,993-88
Oct 21, 202611,081-117
Oct 16, 202611,198+428
Oct 15, 202610,770+249
Oct 14, 202610,5210
Oct 13, 202610,521-252
Oct 09, 202610,773-18
Oct 08, 202610,7910
Oct 07, 202610,791+54
Oct 06, 202610,737-103
Oct 05, 202610,840+53
Oct 02, 202610,787No prior observation