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Contract OI history

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Nov 20, 2026 EXPIRATION

WSO $300.00 Put

WSO261120P00300000

Latest saved OI30Oct 23, 2026
Last change+1vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
WSO $300.00 put open interest history 11 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 30150 2026-10-02: 25 OI2026-10-05: 25 OI2026-10-06: 25 OI2026-10-07: 25 OI2026-10-08: 25 OI2026-10-09: 25 OI2026-10-14: 26 OI2026-10-15: 26 OI2026-10-16: 26 OI2026-10-21: 29 OI2026-10-23: 30 OI Oct 02, 2026Oct 23, 2026

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

WSO contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing30+1
Oct 21, 202629+3
Oct 16, 2026260
Oct 15, 2026260
Oct 14, 202626+1
Oct 09, 2026250
Oct 08, 2026250
Oct 07, 2026250
Oct 06, 2026250
Oct 05, 2026250
Oct 02, 202625No prior observation