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Contract OI history

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Jan 21, 2028 EXPIRATION

PFE $35.00 Put

PFE280121P00035000

Latest saved OI2,201Oct 23, 2026
Last change+25vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
PFE $35.00 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. 2,2011,1000 2026-10-02: 2,189 OI2026-10-05: 2,189 OI2026-10-06: 2,189 OI2026-10-07: 2,189 OI2026-10-08: 2,189 OI2026-10-09: 2,189 OI2026-10-13: 2,189 OI2026-10-14: 2,189 OI2026-10-15: 2,189 OI2026-10-16: 2,188 OI2026-10-21: 2,176 OI2026-10-23: 2,201 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, 2026Viewing2,201+25
Oct 21, 20262,176-12
Oct 16, 20262,188-1
Oct 15, 20262,1890
Oct 14, 20262,1890
Oct 13, 20262,1890
Oct 09, 20262,1890
Oct 08, 20262,1890
Oct 07, 20262,1890
Oct 06, 20262,1890
Oct 05, 20262,1890
Oct 02, 20262,189No prior observation