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Contract OI history

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Jan 21, 2028 EXPIRATION

PFE $20.00 Put

PFE280121P00020000

Latest saved OI13,706Oct 23, 2026
Last change-9vs 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. 13,7926,8960 2026-10-02: 13,687 OI2026-10-05: 13,687 OI2026-10-06: 13,687 OI2026-10-07: 13,688 OI2026-10-08: 13,688 OI2026-10-09: 13,693 OI2026-10-13: 13,691 OI2026-10-14: 13,691 OI2026-10-15: 13,792 OI2026-10-16: 13,770 OI2026-10-21: 13,715 OI2026-10-23: 13,706 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, 2026Viewing13,706-9
Oct 21, 202613,715-55
Oct 16, 202613,770-22
Oct 15, 202613,792+101
Oct 14, 202613,6910
Oct 13, 202613,691-2
Oct 09, 202613,693+5
Oct 08, 202613,6880
Oct 07, 202613,688+1
Oct 06, 202613,6870
Oct 05, 202613,6870
Oct 02, 202613,687No prior observation