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Contract OI history

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Nov 13, 2026 EXPIRATION

PFE $27.50 Put

PFE261113P00027500

Latest saved OI114Oct 23, 2026
Last change-34vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
PFE $27.50 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. 148740 2026-10-02: 0 OI2026-10-05: 0 OI2026-10-06: 10 OI2026-10-07: 11 OI2026-10-08: 11 OI2026-10-09: 25 OI2026-10-13: 35 OI2026-10-14: 35 OI2026-10-15: 40 OI2026-10-16: 59 OI2026-10-21: 148 OI2026-10-23: 114 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, 2026Viewing114-34
Oct 21, 2026148+89
Oct 16, 202659+19
Oct 15, 202640+5
Oct 14, 2026350
Oct 13, 202635+10
Oct 09, 202625+14
Oct 08, 2026110
Oct 07, 202611+1
Oct 06, 202610+10
Oct 05, 202600
Oct 02, 20260No prior observation