OITracker Cboe delayed data

Contract OI history

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Jan 15, 2027 EXPIRATION

PFE $20.00 Call

PFE270115C00020000

Latest saved OI4,168Oct 23, 2026
Last change-21vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
PFE $20.00 call open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 4,2322,1160 2026-10-02: 4,203 OI2026-10-05: 4,176 OI2026-10-06: 4,176 OI2026-10-07: 4,176 OI2026-10-08: 4,176 OI2026-10-09: 4,172 OI2026-10-13: 4,167 OI2026-10-14: 4,167 OI2026-10-15: 4,232 OI2026-10-16: 4,209 OI2026-10-21: 4,189 OI2026-10-23: 4,168 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, 2026Viewing4,168-21
Oct 21, 20264,189-20
Oct 16, 20264,209-23
Oct 15, 20264,232+65
Oct 14, 20264,1670
Oct 13, 20264,167-5
Oct 09, 20264,172-4
Oct 08, 20264,1760
Oct 07, 20264,1760
Oct 06, 20264,1760
Oct 05, 20264,176-27
Oct 02, 20264,203No prior observation