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Contract OI history

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Jan 15, 2027 EXPIRATION

KLAC $166.00 Call

KLAC270115C00166000

Latest saved OI252Oct 23, 2026
Last change+2vs 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. 2521260 2026-10-09: 250 OI2026-10-13: 250 OI2026-10-14: 250 OI2026-10-15: 250 OI2026-10-16: 250 OI2026-10-21: 250 OI2026-10-23: 252 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, 2026Viewing252+2
Oct 21, 20262500
Oct 16, 20262500
Oct 15, 20262500
Oct 14, 20262500
Oct 13, 20262500
Oct 09, 2026250No prior observation