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Contract OI history

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Oct 23, 2026 EXPIRATION

KLAC $197.50 Put

KLAC261023P00197500

Latest saved OI1,658Oct 23, 2026
Last change-2vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
KLAC $197.50 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. 1,6728360 2026-10-09: 1,667 OI2026-10-13: 1,667 OI2026-10-14: 1,667 OI2026-10-15: 1,667 OI2026-10-16: 1,672 OI2026-10-21: 1,660 OI2026-10-23: 1,658 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, 2026Viewing1,658-2
Oct 21, 20261,660-12
Oct 16, 20261,672+5
Oct 15, 20261,6670
Oct 14, 20261,6670
Oct 13, 20261,6670
Oct 09, 20261,667No prior observation