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Contract OI history

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Oct 30, 2026 EXPIRATION

PFE $28.50 Call

PFE261030C00028500

Latest saved OI1,289Oct 23, 2026
Last change-8vs 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. 1,3716850 2026-10-02: 501 OI2026-10-05: 562 OI2026-10-06: 784 OI2026-10-07: 858 OI2026-10-08: 858 OI2026-10-09: 1,157 OI2026-10-13: 1,371 OI2026-10-14: 1,371 OI2026-10-15: 1,312 OI2026-10-16: 1,336 OI2026-10-21: 1,297 OI2026-10-23: 1,289 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, 2026Viewing1,289-8
Oct 21, 20261,297-39
Oct 16, 20261,336+24
Oct 15, 20261,312-59
Oct 14, 20261,3710
Oct 13, 20261,371+214
Oct 09, 20261,157+299
Oct 08, 20268580
Oct 07, 2026858+74
Oct 06, 2026784+222
Oct 05, 2026562+61
Oct 02, 2026501No prior observation