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Contract OI history

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Nov 20, 2026 EXPIRATION

KLAC $172.00 Put

KLAC261120P00172000

Latest saved OI1,450Oct 23, 2026
Last change-7vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
KLAC $172.00 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. 1,4577280 2026-10-09: 1,295 OI2026-10-13: 1,296 OI2026-10-14: 1,296 OI2026-10-15: 1,299 OI2026-10-16: 1,319 OI2026-10-21: 1,457 OI2026-10-23: 1,450 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, 2026Viewing1,450-7
Oct 21, 20261,457+138
Oct 16, 20261,319+20
Oct 15, 20261,299+3
Oct 14, 20261,2960
Oct 13, 20261,296+1
Oct 09, 20261,295No prior observation