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Contract OI history

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Mar 19, 2027 EXPIRATION

KLAC $155.00 Put

KLAC270319P00155000

Latest saved OI331Oct 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 $155.00 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. 3311650 2026-10-09: 275 OI2026-10-13: 313 OI2026-10-14: 313 OI2026-10-15: 318 OI2026-10-16: 318 OI2026-10-21: 331 OI2026-10-23: 331 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, 2026Viewing3310
Oct 21, 2026331+13
Oct 16, 20263180
Oct 15, 2026318+5
Oct 14, 20263130
Oct 13, 2026313+38
Oct 09, 2026275No prior observation