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Contract OI history

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Mar 19, 2027 EXPIRATION

KLAC $165.00 Put

KLAC270319P00165000

Latest saved OI466Oct 23, 2026
Last change0vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
KLAC $165.00 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. 4662330 2026-10-09: 248 OI2026-10-13: 452 OI2026-10-14: 452 OI2026-10-15: 452 OI2026-10-16: 453 OI2026-10-21: 466 OI2026-10-23: 466 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, 2026Viewing4660
Oct 21, 2026466+13
Oct 16, 2026453+1
Oct 15, 20264520
Oct 14, 20264520
Oct 13, 2026452+204
Oct 09, 2026248No prior observation