OITracker Cboe delayed data

Contract OI history

Back to PFE

Jan 15, 2027 EXPIRATION

PFE $28.00 Put

PFE270115P00028000

Latest saved OI6,225Oct 23, 2026
Last change+182vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
PFE $28.00 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. 6,2253,1120 2026-10-02: 5,430 OI2026-10-05: 5,479 OI2026-10-06: 5,509 OI2026-10-07: 5,528 OI2026-10-08: 5,528 OI2026-10-09: 5,559 OI2026-10-13: 5,867 OI2026-10-14: 5,867 OI2026-10-15: 5,870 OI2026-10-16: 5,844 OI2026-10-21: 6,043 OI2026-10-23: 6,225 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, 2026Viewing6,225+182
Oct 21, 20266,043+199
Oct 16, 20265,844-26
Oct 15, 20265,870+3
Oct 14, 20265,8670
Oct 13, 20265,867+308
Oct 09, 20265,559+31
Oct 08, 20265,5280
Oct 07, 20265,528+19
Oct 06, 20265,509+30
Oct 05, 20265,479+49
Oct 02, 20265,430No prior observation