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Contract OI history

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Jan 15, 2027 EXPIRATION

KLAC $158.00 Put

KLAC270115P00158000

Latest saved OI547Oct 23, 2026
Last change+4vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
KLAC $158.00 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. 5472730 2026-10-09: 542 OI2026-10-13: 542 OI2026-10-14: 542 OI2026-10-15: 542 OI2026-10-16: 542 OI2026-10-21: 543 OI2026-10-23: 547 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, 2026Viewing547+4
Oct 21, 2026543+1
Oct 16, 20265420
Oct 15, 20265420
Oct 14, 20265420
Oct 13, 20265420
Oct 09, 2026542No prior observation