OITracker Cboe delayed data

Contract OI history

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Dec 18, 2026 EXPIRATION

WSC $20.00 Call

WSC261218C00020000

Latest saved OI30,570Oct 23, 2026
Last change-2vs previous saved observation
Saved market days8Oct 08, 2026 onwards
Daily open interest Hover a point for its date and OI
WSC $20.00 call open interest history 8 saved observations from 2026-10-08 to 2026-10-23. Exact values and changes are listed in the table below. 30,58215,2910 2026-10-08: 22,319 OI2026-10-09: 25,262 OI2026-10-13: 25,261 OI2026-10-14: 25,261 OI2026-10-15: 28,249 OI2026-10-16: 30,582 OI2026-10-20: 30,572 OI2026-10-23: 30,570 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, 2026Viewing30,570-2
Oct 20, 202630,572-10
Oct 16, 202630,582+2,333
Oct 15, 202628,249+2,988
Oct 14, 202625,2610
Oct 13, 202625,261-1
Oct 09, 202625,262+2,943
Oct 08, 202622,319No prior observation