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Contract OI history

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Oct 23, 2026 EXPIRATION

KLAC $155.00 Put

KLAC261023P00155000

Latest saved OI467Oct 23, 2026
Last change+17vs 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. 4672330 2026-10-09: 325 OI2026-10-13: 324 OI2026-10-14: 324 OI2026-10-15: 338 OI2026-10-16: 340 OI2026-10-21: 450 OI2026-10-23: 467 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, 2026Viewing467+17
Oct 21, 2026450+110
Oct 16, 2026340+2
Oct 15, 2026338+14
Oct 14, 20263240
Oct 13, 2026324-1
Oct 09, 2026325No prior observation