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Contract OI history

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Dec 18, 2026 EXPIRATION

KLAC $145.00 Put

KLAC261218P00145000

Latest saved OI598Oct 23, 2026
Last change+36vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
KLAC $145.00 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. 5982990 2026-10-09: 547 OI2026-10-13: 550 OI2026-10-14: 550 OI2026-10-15: 551 OI2026-10-16: 552 OI2026-10-21: 562 OI2026-10-23: 598 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, 2026Viewing598+36
Oct 21, 2026562+10
Oct 16, 2026552+1
Oct 15, 2026551+1
Oct 14, 20265500
Oct 13, 2026550+3
Oct 09, 2026547No prior observation