OITracker Cboe delayed data

Contract OI history

Back to PFE

Nov 06, 2026 EXPIRATION

PFE $28.50 Call

PFE261106C00028500

Latest saved OI1,738Oct 23, 2026
Last change+9vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
PFE $28.50 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. 1,7568780 2026-10-02: 450 OI2026-10-05: 520 OI2026-10-06: 666 OI2026-10-07: 1,218 OI2026-10-08: 1,218 OI2026-10-09: 1,680 OI2026-10-13: 1,754 OI2026-10-14: 1,754 OI2026-10-15: 1,756 OI2026-10-16: 1,734 OI2026-10-21: 1,729 OI2026-10-23: 1,738 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, 2026Viewing1,738+9
Oct 21, 20261,729-5
Oct 16, 20261,734-22
Oct 15, 20261,756+2
Oct 14, 20261,7540
Oct 13, 20261,754+74
Oct 09, 20261,680+462
Oct 08, 20261,2180
Oct 07, 20261,218+552
Oct 06, 2026666+146
Oct 05, 2026520+70
Oct 02, 2026450No prior observation