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Contract OI history

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Dec 18, 2026 EXPIRATION

ILMN $270.00 Put

ILMN261218P00270000

Latest saved OI114Oct 23, 2026
Last change+19vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
ILMN $270.00 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. 114570 2026-10-09: 83 OI2026-10-13: 85 OI2026-10-14: 95 OI2026-10-15: 95 OI2026-10-16: 95 OI2026-10-21: 95 OI2026-10-23: 114 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, 2026Viewing114+19
Oct 21, 2026950
Oct 16, 2026950
Oct 15, 2026950
Oct 14, 202695+10
Oct 13, 202685+2
Oct 09, 202683No prior observation