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Contract OI history

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Nov 20, 2026 EXPIRATION

WSC $20.00 Put

WSC261120P00020000

Latest saved OI265Oct 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 $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. 2701350 2026-10-08: 270 OI2026-10-09: 270 OI2026-10-13: 270 OI2026-10-14: 269 OI2026-10-15: 268 OI2026-10-16: 267 OI2026-10-20: 265 OI2026-10-23: 265 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, 2026Viewing2650
Oct 20, 2026265-2
Oct 16, 2026267-1
Oct 15, 2026268-1
Oct 14, 2026269-1
Oct 13, 20262700
Oct 09, 20262700
Oct 08, 2026270No prior observation