OITracker Cboe delayed data

Contract OI history

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Jan 15, 2027 EXPIRATION

PFE $20.00 Put

PFE270115P00020000

Latest saved OI59,161Oct 23, 2026
Last change-6vs 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. 59,50929,7540 2026-10-02: 59,509 OI2026-10-05: 59,509 OI2026-10-06: 59,456 OI2026-10-07: 59,456 OI2026-10-08: 59,456 OI2026-10-09: 59,458 OI2026-10-13: 59,333 OI2026-10-14: 59,333 OI2026-10-15: 59,233 OI2026-10-16: 59,221 OI2026-10-21: 59,167 OI2026-10-23: 59,161 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, 2026Viewing59,161-6
Oct 21, 202659,167-54
Oct 16, 202659,221-12
Oct 15, 202659,233-100
Oct 14, 202659,3330
Oct 13, 202659,333-125
Oct 09, 202659,458+2
Oct 08, 202659,4560
Oct 07, 202659,4560
Oct 06, 202659,456-53
Oct 05, 202659,5090
Oct 02, 202659,509No prior observation