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Contract OI history

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Dec 18, 2026 EXPIRATION

ILMN $230.00 Put

ILMN261218P00230000

Latest saved OI165Oct 23, 2026
Last change+12vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
ILMN $230.00 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. 165820 2026-10-09: 60 OI2026-10-13: 147 OI2026-10-14: 154 OI2026-10-15: 154 OI2026-10-16: 154 OI2026-10-21: 153 OI2026-10-23: 165 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, 2026Viewing165+12
Oct 21, 2026153-1
Oct 16, 20261540
Oct 15, 20261540
Oct 14, 2026154+7
Oct 13, 2026147+87
Oct 09, 202660No prior observation