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Contract OI history

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Sep 17, 2027 EXPIRATION

KLAC $155.00 Put

KLAC270917P00155000

Latest saved OI157Oct 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. 157780 2026-10-09: 155 OI2026-10-13: 157 OI2026-10-14: 157 OI2026-10-15: 157 OI2026-10-16: 157 OI2026-10-21: 157 OI2026-10-23: 157 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, 2026Viewing1570
Oct 21, 20261570
Oct 16, 20261570
Oct 15, 20261570
Oct 14, 20261570
Oct 13, 2026157+2
Oct 09, 2026155No prior observation