OITracker Cboe delayed data

Contract OI history

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Jan 19, 2029 EXPIRATION

PFE $25.00 Put

PFE290119P00025000

Latest saved OI215Oct 23, 2026
Last change+56vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
PFE $25.00 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. 2151070 2026-10-02: 108 OI2026-10-05: 108 OI2026-10-06: 108 OI2026-10-07: 108 OI2026-10-08: 108 OI2026-10-09: 127 OI2026-10-13: 127 OI2026-10-14: 127 OI2026-10-15: 128 OI2026-10-16: 129 OI2026-10-21: 159 OI2026-10-23: 215 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, 2026Viewing215+56
Oct 21, 2026159+30
Oct 16, 2026129+1
Oct 15, 2026128+1
Oct 14, 20261270
Oct 13, 20261270
Oct 09, 2026127+19
Oct 08, 20261080
Oct 07, 20261080
Oct 06, 20261080
Oct 05, 20261080
Oct 02, 2026108No prior observation