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Contract OI history

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Jan 21, 2028 EXPIRATION

KLAC $180.00 Put

KLAC280121P00180000

Latest saved OI450Oct 23, 2026
Last change-10vs 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. 4802400 2026-10-09: 480 OI2026-10-13: 480 OI2026-10-14: 480 OI2026-10-15: 460 OI2026-10-16: 460 OI2026-10-21: 460 OI2026-10-23: 450 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, 2026Viewing450-10
Oct 21, 20264600
Oct 16, 20264600
Oct 15, 2026460-20
Oct 14, 20264800
Oct 13, 20264800
Oct 09, 2026480No prior observation