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Contract OI history

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Dec 18, 2026 EXPIRATION

PFE $31.00 Put

PFE261218P00031000

Latest saved OI177Oct 23, 2026
Last change+102vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
PFE $31.00 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. 177880 2026-10-02: 54 OI2026-10-05: 52 OI2026-10-06: 52 OI2026-10-07: 52 OI2026-10-08: 52 OI2026-10-09: 52 OI2026-10-13: 52 OI2026-10-14: 52 OI2026-10-15: 62 OI2026-10-16: 62 OI2026-10-21: 75 OI2026-10-23: 177 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, 2026Viewing177+102
Oct 21, 202675+13
Oct 16, 2026620
Oct 15, 202662+10
Oct 14, 2026520
Oct 13, 2026520
Oct 09, 2026520
Oct 08, 2026520
Oct 07, 2026520
Oct 06, 2026520
Oct 05, 202652-2
Oct 02, 202654No prior observation