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Contract OI history

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Dec 18, 2026 EXPIRATION

KLAC $166.00 Call

KLAC261218C00166000

Latest saved OI71Oct 23, 2026
Last change+15vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
KLAC $166.00 call open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 71350 2026-10-09: 45 OI2026-10-13: 45 OI2026-10-14: 45 OI2026-10-15: 45 OI2026-10-16: 45 OI2026-10-21: 56 OI2026-10-23: 71 OI Oct 09, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

KLAC contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing71+15
Oct 21, 202656+11
Oct 16, 2026450
Oct 15, 2026450
Oct 14, 2026450
Oct 13, 2026450
Oct 09, 202645No prior observation