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Contract OI history

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Dec 15, 2028 EXPIRATION

PFE $20.00 Put

PFE281215P00020000

Latest saved OI718Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
PFE $20.00 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. 7183590 2026-10-02: 703 OI2026-10-05: 703 OI2026-10-06: 713 OI2026-10-07: 713 OI2026-10-08: 713 OI2026-10-09: 715 OI2026-10-13: 716 OI2026-10-14: 716 OI2026-10-15: 717 OI2026-10-16: 718 OI2026-10-21: 718 OI2026-10-23: 718 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, 2026Viewing7180
Oct 21, 20267180
Oct 16, 2026718+1
Oct 15, 2026717+1
Oct 14, 20267160
Oct 13, 2026716+1
Oct 09, 2026715+2
Oct 08, 20267130
Oct 07, 20267130
Oct 06, 2026713+10
Oct 05, 20267030
Oct 02, 2026703No prior observation