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Contract OI history

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Nov 20, 2026 EXPIRATION

ILMN $280.00 Put

ILMN261120P00280000

Latest saved OI185Oct 23, 2026
Last change-3vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
ILMN $280.00 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. 194970 2026-10-09: 82 OI2026-10-13: 82 OI2026-10-14: 82 OI2026-10-15: 82 OI2026-10-16: 194 OI2026-10-21: 188 OI2026-10-23: 185 OI Oct 09, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

ILMN contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing185-3
Oct 21, 2026188-6
Oct 16, 2026194+112
Oct 15, 2026820
Oct 14, 2026820
Oct 13, 2026820
Oct 09, 202682No prior observation