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Contract OI history

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Dec 18, 2026 EXPIRATION

PFE $26.00 Put

PFE261218P00026000

Latest saved OI9,412Oct 23, 2026
Last change+537vs 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. 9,4124,7060 2026-10-02: 8,379 OI2026-10-05: 8,415 OI2026-10-06: 8,873 OI2026-10-07: 8,854 OI2026-10-08: 8,854 OI2026-10-09: 8,746 OI2026-10-13: 8,765 OI2026-10-14: 8,765 OI2026-10-15: 8,811 OI2026-10-16: 8,815 OI2026-10-21: 8,875 OI2026-10-23: 9,412 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, 2026Viewing9,412+537
Oct 21, 20268,875+60
Oct 16, 20268,815+4
Oct 15, 20268,811+46
Oct 14, 20268,7650
Oct 13, 20268,765+19
Oct 09, 20268,746-108
Oct 08, 20268,8540
Oct 07, 20268,854-19
Oct 06, 20268,873+458
Oct 05, 20268,415+36
Oct 02, 20268,379No prior observation