LongILMNJune 30, 2026

Diamond Hill Capital Management, LLC - Mid Cap Strategy on Illumina, Inc.

Thesis

Illumina is the leading producer of next-generation sequencing systems used to sequence DNA for research and increasingly for cancer diagnosis and treatment. Shares strengthened after the company reported better-than-expected clinical growth. Diamond Hill also viewed the launch of Roche's comparable product as underwhelming, which reduced near-term competitive concerns and reinforced Illumina's position in sequencing.

Shares rose during the quarter after better-than-expected clinical growth, while competitor Roche's comparable product launch appeared underwhelming.
Diamond Hill Capital Management, LLC - Mid Cap Strategy — Mid Cap Strategy As of 30 Jun 2026

Key risks

  • Competition from alternative sequencing products, including Roche's comparable offering.

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