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Contract OI history

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Nov 20, 2026 EXPIRATION

KLAC $170.00 Put

KLAC261120P00170000

Latest saved OI1,062Oct 23, 2026
Last change+12vs 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. 1,0625310 2026-10-09: 895 OI2026-10-13: 1,000 OI2026-10-14: 1,000 OI2026-10-15: 1,021 OI2026-10-16: 1,024 OI2026-10-21: 1,050 OI2026-10-23: 1,062 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, 2026Viewing1,062+12
Oct 21, 20261,050+26
Oct 16, 20261,024+3
Oct 15, 20261,021+21
Oct 14, 20261,0000
Oct 13, 20261,000+105
Oct 09, 2026895No prior observation