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Contract OI history

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Nov 13, 2026 EXPIRATION

PFE $28.50 Call

PFE261113C00028500

Latest saved OI334Oct 23, 2026
Last change-4vs 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. 3381690 2026-10-02: 8 OI2026-10-05: 15 OI2026-10-06: 61 OI2026-10-07: 66 OI2026-10-08: 66 OI2026-10-09: 106 OI2026-10-13: 213 OI2026-10-14: 213 OI2026-10-15: 215 OI2026-10-16: 281 OI2026-10-21: 338 OI2026-10-23: 334 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, 2026Viewing334-4
Oct 21, 2026338+57
Oct 16, 2026281+66
Oct 15, 2026215+2
Oct 14, 20262130
Oct 13, 2026213+107
Oct 09, 2026106+40
Oct 08, 2026660
Oct 07, 202666+5
Oct 06, 202661+46
Oct 05, 202615+7
Oct 02, 20268No prior observation