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Contract OI history

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Nov 20, 2026 EXPIRATION

KLAC $190.00 Put

KLAC261120P00190000

Latest saved OI390Oct 23, 2026
Last change-4vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
KLAC $190.00 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. 3971980 2026-10-09: 385 OI2026-10-13: 387 OI2026-10-14: 387 OI2026-10-15: 397 OI2026-10-16: 394 OI2026-10-21: 394 OI2026-10-23: 390 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, 2026Viewing390-4
Oct 21, 20263940
Oct 16, 2026394-3
Oct 15, 2026397+10
Oct 14, 20263870
Oct 13, 2026387+2
Oct 09, 2026385No prior observation