OITracker Cboe delayed data

Contract OI history

Back to PFE

Oct 30, 2026 EXPIRATION

PFE $26.50 Call

PFE261030C00026500

Latest saved OI837Oct 23, 2026
Last change-19vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
PFE $26.50 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. 8564280 2026-10-02: 820 OI2026-10-05: 851 OI2026-10-06: 826 OI2026-10-07: 825 OI2026-10-08: 825 OI2026-10-09: 825 OI2026-10-13: 824 OI2026-10-14: 824 OI2026-10-15: 816 OI2026-10-16: 817 OI2026-10-21: 856 OI2026-10-23: 837 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, 2026Viewing837-19
Oct 21, 2026856+39
Oct 16, 2026817+1
Oct 15, 2026816-8
Oct 14, 20268240
Oct 13, 2026824-1
Oct 09, 20268250
Oct 08, 20268250
Oct 07, 2026825-1
Oct 06, 2026826-25
Oct 05, 2026851+31
Oct 02, 2026820No prior observation