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Contract OI history

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Jan 21, 2028 EXPIRATION

O $50.00 Put

O280121P00050000

Latest saved OI920Oct 23, 2026
Last change+2vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
O $50.00 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. 9304650 2026-10-02: 909 OI2026-10-05: 909 OI2026-10-06: 910 OI2026-10-07: 910 OI2026-10-08: 910 OI2026-10-09: 910 OI2026-10-13: 929 OI2026-10-14: 929 OI2026-10-15: 929 OI2026-10-16: 930 OI2026-10-21: 918 OI2026-10-23: 920 OI Oct 02, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

O contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing920+2
Oct 21, 2026918-12
Oct 16, 2026930+1
Oct 15, 20269290
Oct 14, 20269290
Oct 13, 2026929+19
Oct 09, 20269100
Oct 08, 20269100
Oct 07, 20269100
Oct 06, 2026910+1
Oct 05, 20269090
Oct 02, 2026909No prior observation