OITracker Cboe delayed data

Contract OI history

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Jan 21, 2028 EXPIRATION

PFE $32.00 Put

PFE280121P00032000

Latest saved OI1,565Oct 23, 2026
Last change+81vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
PFE $32.00 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. 1,5657820 2026-10-02: 625 OI2026-10-05: 625 OI2026-10-06: 625 OI2026-10-07: 625 OI2026-10-08: 625 OI2026-10-09: 625 OI2026-10-13: 625 OI2026-10-14: 625 OI2026-10-15: 625 OI2026-10-16: 625 OI2026-10-21: 1,484 OI2026-10-23: 1,565 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, 2026Viewing1,565+81
Oct 21, 20261,484+859
Oct 16, 20266250
Oct 15, 20266250
Oct 14, 20266250
Oct 13, 20266250
Oct 09, 20266250
Oct 08, 20266250
Oct 07, 20266250
Oct 06, 20266250
Oct 05, 20266250
Oct 02, 2026625No prior observation