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Contract OI history

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Mar 19, 2027 EXPIRATION

KLAC $138.00 Put

KLAC270319P00138000

Latest saved OI554Oct 23, 2026
Last change+13vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
KLAC $138.00 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. 5542770 2026-10-09: 314 OI2026-10-13: 296 OI2026-10-14: 296 OI2026-10-15: 296 OI2026-10-16: 526 OI2026-10-21: 541 OI2026-10-23: 554 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, 2026Viewing554+13
Oct 21, 2026541+15
Oct 16, 2026526+230
Oct 15, 20262960
Oct 14, 20262960
Oct 13, 2026296-18
Oct 09, 2026314No prior observation