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Contract OI history

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Dec 18, 2026 EXPIRATION

PFE $35.00 Put

PFE261218P00035000

Latest saved OI1,133Oct 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 $35.00 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. 1,1335660 2026-10-02: 1,060 OI2026-10-05: 1,060 OI2026-10-06: 1,060 OI2026-10-07: 1,060 OI2026-10-08: 1,060 OI2026-10-09: 1,060 OI2026-10-13: 1,060 OI2026-10-14: 1,060 OI2026-10-15: 1,125 OI2026-10-16: 1,125 OI2026-10-21: 1,133 OI2026-10-23: 1,133 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, 2026Viewing1,1330
Oct 21, 20261,133+8
Oct 16, 20261,1250
Oct 15, 20261,125+65
Oct 14, 20261,0600
Oct 13, 20261,0600
Oct 09, 20261,0600
Oct 08, 20261,0600
Oct 07, 20261,0600
Oct 06, 20261,0600
Oct 05, 20261,0600
Oct 02, 20261,060No prior observation