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Contract OI history

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Nov 20, 2026 EXPIRATION

PFE $26.00 Put

PFE261120P00026000

Latest saved OI19,003Oct 23, 2026
Last change+455vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
PFE $26.00 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. 19,0039,5010 2026-10-02: 8,511 OI2026-10-05: 8,655 OI2026-10-06: 8,832 OI2026-10-07: 8,801 OI2026-10-08: 8,801 OI2026-10-09: 8,995 OI2026-10-13: 18,783 OI2026-10-14: 18,783 OI2026-10-15: 18,701 OI2026-10-16: 18,664 OI2026-10-21: 18,548 OI2026-10-23: 19,003 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, 2026Viewing19,003+455
Oct 21, 202618,548-116
Oct 16, 202618,664-37
Oct 15, 202618,701-82
Oct 14, 202618,7830
Oct 13, 202618,783+9,788
Oct 09, 20268,995+194
Oct 08, 20268,8010
Oct 07, 20268,801-31
Oct 06, 20268,832+177
Oct 05, 20268,655+144
Oct 02, 20268,511No prior observation