OITracker Cboe delayed data

Contract OI history

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Oct 30, 2026 EXPIRATION

PFE $31.00 Put

PFE261030P00031000

Latest saved OI112Oct 23, 2026
Last change+26vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
PFE $31.00 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. 112560 2026-10-02: 0 OI2026-10-05: 22 OI2026-10-06: 0 OI2026-10-07: 0 OI2026-10-08: 0 OI2026-10-09: 0 OI2026-10-13: 0 OI2026-10-14: 0 OI2026-10-15: 0 OI2026-10-16: 26 OI2026-10-21: 86 OI2026-10-23: 112 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, 2026Viewing112+26
Oct 21, 202686+60
Oct 16, 202626+26
Oct 15, 202600
Oct 14, 202600
Oct 13, 202600
Oct 09, 202600
Oct 08, 202600
Oct 07, 202600
Oct 06, 20260-22
Oct 05, 202622+22
Oct 02, 20260No prior observation