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Contract OI history

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Dec 17, 2027 EXPIRATION

PFE $18.00 Put

PFE271217P00018000

Latest saved OI20,274Oct 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 $18.00 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. 20,28010,1400 2026-10-02: 20,279 OI2026-10-05: 20,279 OI2026-10-06: 20,280 OI2026-10-07: 20,279 OI2026-10-08: 20,279 OI2026-10-09: 20,277 OI2026-10-13: 20,277 OI2026-10-14: 20,277 OI2026-10-15: 20,274 OI2026-10-16: 20,274 OI2026-10-21: 20,274 OI2026-10-23: 20,274 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, 2026Viewing20,2740
Oct 21, 202620,2740
Oct 16, 202620,2740
Oct 15, 202620,274-3
Oct 14, 202620,2770
Oct 13, 202620,2770
Oct 09, 202620,277-2
Oct 08, 202620,2790
Oct 07, 202620,279-1
Oct 06, 202620,280+1
Oct 05, 202620,2790
Oct 02, 202620,279No prior observation