OITracker Cboe delayed data

Contract OI history

Back to PFE

Dec 18, 2026 EXPIRATION

PFE $42.00 Call

PFE261218C00042000

Latest saved OI1,204Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
PFE $42.00 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. 1,2046020 2026-10-02: 1,111 OI2026-10-05: 1,111 OI2026-10-06: 1,111 OI2026-10-07: 1,102 OI2026-10-08: 1,102 OI2026-10-09: 1,102 OI2026-10-13: 1,102 OI2026-10-14: 1,102 OI2026-10-15: 1,108 OI2026-10-16: 1,108 OI2026-10-21: 1,204 OI2026-10-23: 1,204 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, 2026Viewing1,2040
Oct 21, 20261,204+96
Oct 16, 20261,1080
Oct 15, 20261,108+6
Oct 14, 20261,1020
Oct 13, 20261,1020
Oct 09, 20261,1020
Oct 08, 20261,1020
Oct 07, 20261,102-9
Oct 06, 20261,1110
Oct 05, 20261,1110
Oct 02, 20261,111No prior observation