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Contract OI history

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Sep 17, 2027 EXPIRATION

PFE $20.00 Put

PFE270917P00020000

Latest saved OI583Oct 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. 5832910 2026-10-02: 465 OI2026-10-05: 466 OI2026-10-06: 580 OI2026-10-07: 581 OI2026-10-08: 581 OI2026-10-09: 581 OI2026-10-13: 581 OI2026-10-14: 581 OI2026-10-15: 583 OI2026-10-16: 583 OI2026-10-21: 583 OI2026-10-23: 583 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, 2026Viewing5830
Oct 21, 20265830
Oct 16, 20265830
Oct 15, 2026583+2
Oct 14, 20265810
Oct 13, 20265810
Oct 09, 20265810
Oct 08, 20265810
Oct 07, 2026581+1
Oct 06, 2026580+114
Oct 05, 2026466+1
Oct 02, 2026465No prior observation