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Contract OI history

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Oct 30, 2026 EXPIRATION

PFE $25.50 Put

PFE261030P00025500

Latest saved OI82Oct 23, 2026
Last change-13vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
PFE $25.50 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. 96480 2026-10-02: 44 OI2026-10-05: 49 OI2026-10-06: 87 OI2026-10-07: 87 OI2026-10-08: 87 OI2026-10-09: 96 OI2026-10-13: 95 OI2026-10-14: 95 OI2026-10-15: 95 OI2026-10-16: 95 OI2026-10-21: 95 OI2026-10-23: 82 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, 2026Viewing82-13
Oct 21, 2026950
Oct 16, 2026950
Oct 15, 2026950
Oct 14, 2026950
Oct 13, 202695-1
Oct 09, 202696+9
Oct 08, 2026870
Oct 07, 2026870
Oct 06, 202687+38
Oct 05, 202649+5
Oct 02, 202644No prior observation