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Contract OI history

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Nov 20, 2026 EXPIRATION

KLAC $135.00 Put

KLAC261120P00135000

Latest saved OI578Oct 23, 2026
Last change+319vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
KLAC $135.00 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. 5782890 2026-10-09: 196 OI2026-10-13: 199 OI2026-10-14: 199 OI2026-10-15: 199 OI2026-10-16: 198 OI2026-10-21: 259 OI2026-10-23: 578 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, 2026Viewing578+319
Oct 21, 2026259+61
Oct 16, 2026198-1
Oct 15, 20261990
Oct 14, 20261990
Oct 13, 2026199+3
Oct 09, 2026196No prior observation