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Contract OI history

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Oct 23, 2026 EXPIRATION

PFE $27.50 Call

PFE261023C00027500

Latest saved OI1,253Oct 23, 2026
Last change-129vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
PFE $27.50 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. 1,3826910 2026-10-02: 913 OI2026-10-05: 1,022 OI2026-10-06: 1,070 OI2026-10-07: 1,116 OI2026-10-08: 1,116 OI2026-10-09: 1,346 OI2026-10-13: 1,329 OI2026-10-14: 1,329 OI2026-10-15: 1,330 OI2026-10-16: 1,365 OI2026-10-21: 1,382 OI2026-10-23: 1,253 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, 2026Viewing1,253-129
Oct 21, 20261,382+17
Oct 16, 20261,365+35
Oct 15, 20261,330+1
Oct 14, 20261,3290
Oct 13, 20261,329-17
Oct 09, 20261,346+230
Oct 08, 20261,1160
Oct 07, 20261,116+46
Oct 06, 20261,070+48
Oct 05, 20261,022+109
Oct 02, 2026913No prior observation