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Contract OI history

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Oct 30, 2026 EXPIRATION

KLAC $170.00 Put

KLAC261030P00170000

Latest saved OI311Oct 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 $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. 3371680 2026-10-09: 319 OI2026-10-13: 337 OI2026-10-14: 337 OI2026-10-15: 299 OI2026-10-16: 314 OI2026-10-21: 321 OI2026-10-23: 311 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, 2026Viewing311-10
Oct 21, 2026321+7
Oct 16, 2026314+15
Oct 15, 2026299-38
Oct 14, 20263370
Oct 13, 2026337+18
Oct 09, 2026319No prior observation