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Contract OI history

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Oct 23, 2026 EXPIRATION

PFE $28.50 Call

PFE261023C00028500

Latest saved OI1,511Oct 23, 2026
Last change-46vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
PFE $28.50 call open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 1,9319650 2026-10-02: 774 OI2026-10-05: 928 OI2026-10-06: 1,026 OI2026-10-07: 1,302 OI2026-10-08: 1,302 OI2026-10-09: 1,485 OI2026-10-13: 1,931 OI2026-10-14: 1,931 OI2026-10-15: 1,812 OI2026-10-16: 1,809 OI2026-10-21: 1,557 OI2026-10-23: 1,511 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, 2026Viewing1,511-46
Oct 21, 20261,557-252
Oct 16, 20261,809-3
Oct 15, 20261,812-119
Oct 14, 20261,9310
Oct 13, 20261,931+446
Oct 09, 20261,485+183
Oct 08, 20261,3020
Oct 07, 20261,302+276
Oct 06, 20261,026+98
Oct 05, 2026928+154
Oct 02, 2026774No prior observation