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Contract OI history

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Jan 19, 2029 EXPIRATION

KLAC $220.00 Put

KLAC290119P00220000

Latest saved OI147Oct 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 $220.00 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. 147730 2026-10-09: 145 OI2026-10-13: 145 OI2026-10-14: 145 OI2026-10-15: 145 OI2026-10-16: 147 OI2026-10-21: 147 OI2026-10-23: 147 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, 2026Viewing1470
Oct 21, 20261470
Oct 16, 2026147+2
Oct 15, 20261450
Oct 14, 20261450
Oct 13, 20261450
Oct 09, 2026145No prior observation