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Contract OI history

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Jan 19, 2029 EXPIRATION

PFE $18.00 Put

PFE290119P00018000

Latest saved OI19Oct 23, 2026
Last change+11vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
PFE $18.00 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. 1990 2026-10-02: 6 OI2026-10-05: 7 OI2026-10-06: 7 OI2026-10-07: 7 OI2026-10-08: 7 OI2026-10-09: 8 OI2026-10-13: 8 OI2026-10-14: 8 OI2026-10-15: 8 OI2026-10-16: 8 OI2026-10-21: 8 OI2026-10-23: 19 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+11
Oct 21, 202680
Oct 16, 202680
Oct 15, 202680
Oct 14, 202680
Oct 13, 202680
Oct 09, 20268+1
Oct 08, 202670
Oct 07, 202670
Oct 06, 202670
Oct 05, 20267+1
Oct 02, 20266No prior observation