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Contract OI history

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Nov 06, 2026 EXPIRATION

PFE $27.50 Put

PFE261106P00027500

Latest saved OI225Oct 23, 2026
Last change+5vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
PFE $27.50 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. 2251120 2026-10-02: 34 OI2026-10-05: 106 OI2026-10-06: 118 OI2026-10-07: 122 OI2026-10-08: 122 OI2026-10-09: 135 OI2026-10-13: 188 OI2026-10-14: 188 OI2026-10-15: 197 OI2026-10-16: 203 OI2026-10-21: 220 OI2026-10-23: 225 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, 2026Viewing225+5
Oct 21, 2026220+17
Oct 16, 2026203+6
Oct 15, 2026197+9
Oct 14, 20261880
Oct 13, 2026188+53
Oct 09, 2026135+13
Oct 08, 20261220
Oct 07, 2026122+4
Oct 06, 2026118+12
Oct 05, 2026106+72
Oct 02, 202634No prior observation