OITracker Cboe delayed data

Contract OI history

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Nov 20, 2026 EXPIRATION

PFE $20.00 Put

PFE261120P00020000

Latest saved OI979Oct 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. 9824910 2026-10-02: 982 OI2026-10-05: 982 OI2026-10-06: 979 OI2026-10-07: 979 OI2026-10-08: 979 OI2026-10-09: 979 OI2026-10-13: 979 OI2026-10-14: 979 OI2026-10-15: 979 OI2026-10-16: 979 OI2026-10-21: 979 OI2026-10-23: 979 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, 2026Viewing9790
Oct 21, 20269790
Oct 16, 20269790
Oct 15, 20269790
Oct 14, 20269790
Oct 13, 20269790
Oct 09, 20269790
Oct 08, 20269790
Oct 07, 20269790
Oct 06, 2026979-3
Oct 05, 20269820
Oct 02, 2026982No prior observation