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Contract OI history

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Jan 15, 2027 EXPIRATION

KLAC $145.00 Put

KLAC270115P00145000

Latest saved OI465Oct 23, 2026
Last change+6vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
KLAC $145.00 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. 4652320 2026-10-09: 445 OI2026-10-13: 445 OI2026-10-14: 445 OI2026-10-15: 440 OI2026-10-16: 441 OI2026-10-21: 459 OI2026-10-23: 465 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, 2026Viewing465+6
Oct 21, 2026459+18
Oct 16, 2026441+1
Oct 15, 2026440-5
Oct 14, 20264450
Oct 13, 20264450
Oct 09, 2026445No prior observation