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Contract OI history

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Jan 21, 2028 EXPIRATION

KLAC $100.00 Put

KLAC280121P00100000

Latest saved OI302Oct 23, 2026
Last change+100vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
KLAC $100.00 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. 3021510 2026-10-09: 231 OI2026-10-13: 229 OI2026-10-14: 229 OI2026-10-15: 226 OI2026-10-16: 224 OI2026-10-21: 202 OI2026-10-23: 302 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, 2026Viewing302+100
Oct 21, 2026202-22
Oct 16, 2026224-2
Oct 15, 2026226-3
Oct 14, 20262290
Oct 13, 2026229-2
Oct 09, 2026231No prior observation