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Contract OI history

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Jan 21, 2028 EXPIRATION

PFE $37.00 Put

PFE280121P00037000

Latest saved OI103Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
PFE $37.00 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. 104520 2026-10-02: 104 OI2026-10-05: 104 OI2026-10-06: 104 OI2026-10-07: 104 OI2026-10-08: 104 OI2026-10-09: 104 OI2026-10-13: 104 OI2026-10-14: 104 OI2026-10-15: 104 OI2026-10-16: 103 OI2026-10-21: 103 OI2026-10-23: 103 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, 2026Viewing1030
Oct 21, 20261030
Oct 16, 2026103-1
Oct 15, 20261040
Oct 14, 20261040
Oct 13, 20261040
Oct 09, 20261040
Oct 08, 20261040
Oct 07, 20261040
Oct 06, 20261040
Oct 05, 20261040
Oct 02, 2026104No prior observation