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Contract OI history

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Jan 15, 2027 EXPIRATION

WSC $27.50 Put

WSC270115P00027500

Latest saved OI28Oct 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 $27.50 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. 38190 2026-10-08: 38 OI2026-10-09: 38 OI2026-10-13: 38 OI2026-10-14: 38 OI2026-10-15: 28 OI2026-10-16: 28 OI2026-10-20: 28 OI2026-10-23: 28 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, 2026Viewing280
Oct 20, 2026280
Oct 16, 2026280
Oct 15, 202628-10
Oct 14, 2026380
Oct 13, 2026380
Oct 09, 2026380
Oct 08, 202638No prior observation