Contract OI history

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Jan 15, 2027 EXPIRATION

KLAC $138.00 Put

KLAC270115P00138000

Latest saved OI587Oct 23, 2026
Last change+14vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
KLAC $138.00 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. 6103050 2026-10-09: 610 OI2026-10-13: 608 OI2026-10-14: 608 OI2026-10-15: 608 OI2026-10-16: 606 OI2026-10-21: 573 OI2026-10-23: 587 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, 2026Viewing587+14
Oct 21, 2026573-33
Oct 16, 2026606-2
Oct 15, 20266080
Oct 14, 20266080
Oct 13, 2026608-2
Oct 09, 2026610No prior observation