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Contract OI history

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Jan 15, 2027 EXPIRATION

KLAC $170.00 Put

KLAC270115P00170000

Latest saved OI933Oct 23, 2026
Last change-1vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
KLAC $170.00 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. 9584790 2026-10-09: 871 OI2026-10-13: 958 OI2026-10-14: 958 OI2026-10-15: 957 OI2026-10-16: 934 OI2026-10-21: 934 OI2026-10-23: 933 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, 2026Viewing933-1
Oct 21, 20269340
Oct 16, 2026934-23
Oct 15, 2026957-1
Oct 14, 20269580
Oct 13, 2026958+87
Oct 09, 2026871No prior observation