Why Illumina, Inc. (ILMN) stock fell 18.6% on Friday, October 30, 2026

Illumina, Inc. (ILMN) closed at $235.99, down 18.64% on Friday, October 30, 2026, on volume of 5,377,199 shares (1.9× its 3-month average); market value about $35.60B.

What happened: primary sources

Events Nexqual found for ILMN on Friday, October 30, 2026 or the trading day before (October 29, 2026):

• Oct 29, 2026: Reported Q3 2026 results: adjusted EPS $1.62 vs consensus $1.36 (beat), revenue $1.13B vs consensus $1.15B (miss). Guidance: Illumina raised its full year 2026 revenue guidance to $4.64-$4.66 billion and non-GAAP diluted EPS guidance to $5.40-$5.45. source
• Oct 30, 2026: Evercore ISI Group: Target lowered, Outperform, price target $290 → $275

These are listed as context. A filing or rating change on the same day is not proof that it caused the move; read the source.

More on ILMN

ILMN stock page: price, SEC financials, insider trades, superinvestor holders, analyst estimates and options. Earnings report: ILMN results, October 29, 2026. Other big moves that day: October 30, 2026.

Sources: SEC EDGAR, Nexqual Earnings Flash, analyst rating changes, Nexqual market data. Built November 4, 2026 at 11:36 UTC. Not investment advice.

Data source: Nexqual. Last updated: November 4, 2026 at 11:36 UTC. This page is informational and not investment advice.

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