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Contract OI history

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Nov 20, 2026 EXPIRATION

WSC $17.50 Put

WSC261120P00017500

Latest saved OI207Oct 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. 2091040 2026-10-08: 205 OI2026-10-09: 205 OI2026-10-13: 205 OI2026-10-14: 205 OI2026-10-15: 207 OI2026-10-16: 209 OI2026-10-20: 207 OI2026-10-23: 207 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, 2026Viewing2070
Oct 20, 2026207-2
Oct 16, 2026209+2
Oct 15, 2026207+2
Oct 14, 20262050
Oct 13, 20262050
Oct 09, 20262050
Oct 08, 2026205No prior observation