OITracker Cboe delayed data

Contract OI history

Back to PFE

Dec 18, 2026 EXPIRATION

PFE $20.00 Put

PFE261218P00020000

Latest saved OI15,754Oct 23, 2026
Last change-30vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
PFE $20.00 put open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 15,7907,8950 2026-10-02: 15,784 OI2026-10-05: 15,790 OI2026-10-06: 15,790 OI2026-10-07: 15,789 OI2026-10-08: 15,789 OI2026-10-09: 15,785 OI2026-10-13: 15,784 OI2026-10-14: 15,784 OI2026-10-15: 15,784 OI2026-10-16: 15,784 OI2026-10-21: 15,784 OI2026-10-23: 15,754 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, 2026Viewing15,754-30
Oct 21, 202615,7840
Oct 16, 202615,7840
Oct 15, 202615,7840
Oct 14, 202615,7840
Oct 13, 202615,784-1
Oct 09, 202615,785-4
Oct 08, 202615,7890
Oct 07, 202615,789-1
Oct 06, 202615,7900
Oct 05, 202615,790+6
Oct 02, 202615,784No prior observation