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Contract OI history

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Apr 16, 2027 EXPIRATION

WSC $20.00 Put

WSC270416P00020000

Latest saved OI34Oct 23, 2026
Last change+24vs previous saved observation
Saved market days8Oct 08, 2026 onwards
Daily open interest Hover a point for its date and OI
WSC $20.00 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. 34170 2026-10-08: 10 OI2026-10-09: 10 OI2026-10-13: 10 OI2026-10-14: 10 OI2026-10-15: 10 OI2026-10-16: 10 OI2026-10-20: 10 OI2026-10-23: 34 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, 2026Viewing34+24
Oct 20, 2026100
Oct 16, 2026100
Oct 15, 2026100
Oct 14, 2026100
Oct 13, 2026100
Oct 09, 2026100
Oct 08, 202610No prior observation