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Contract OI history

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Dec 18, 2026 EXPIRATION

WSC $17.50 Put

WSC261218P00017500

Latest saved OI1,183Oct 23, 2026
Last change0vs previous saved observation
Saved market days8Oct 08, 2026 onwards
Daily open interest Hover a point for its date and OI
WSC $17.50 put open interest history 8 saved observations from 2026-10-08 to 2026-10-23. Exact values and changes are listed in the table below. 1,1865930 2026-10-08: 313 OI2026-10-09: 1,154 OI2026-10-13: 1,185 OI2026-10-14: 1,185 OI2026-10-15: 1,185 OI2026-10-16: 1,186 OI2026-10-20: 1,183 OI2026-10-23: 1,183 OI Oct 08, 2026Oct 23, 2026

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

WSC contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing1,1830
Oct 20, 20261,183-3
Oct 16, 20261,186+1
Oct 15, 20261,1850
Oct 14, 20261,1850
Oct 13, 20261,185+31
Oct 09, 20261,154+841
Oct 08, 2026313No prior observation