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Contract OI history

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Sep 17, 2027 EXPIRATION

KLAC $180.00 Put

KLAC270917P00180000

Latest saved OI367Oct 23, 2026
Last change0vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
KLAC $180.00 put open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 3671830 2026-10-09: 327 OI2026-10-13: 335 OI2026-10-14: 335 OI2026-10-15: 335 OI2026-10-16: 335 OI2026-10-21: 367 OI2026-10-23: 367 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, 2026Viewing3670
Oct 21, 2026367+32
Oct 16, 20263350
Oct 15, 20263350
Oct 14, 20263350
Oct 13, 2026335+8
Oct 09, 2026327No prior observation