Will Datacenter Momentum Keep Powering Coherent's Growth?

Coherent Corp. (COHR) reported fiscal Q4 2026 revenue of $2.05 billion, up 34% year-over-year, driven by a 59% surge in its Datacenter & Communications segment. That segment now accounts for 79% of total revenue, underscoring the company's heavy tilt toward datacenter spending.

The company guided fiscal Q1 2027 revenue between $2.2 billion and $2.4 billion, with adjusted operating margins expected to improve to 21.8%. The guidance reflects continued momentum in datacenter and communications infrastructure.

The growth story comes with a caveat: Industrial segment revenues declined 16% year-over-year in Q4, highlighting significant revenue concentration risk. With nearly four-fifths of revenue now tied to datacenter demand, any slowdown in cloud capital expenditure or optical component orders could pressure results.

COHR's operating leverage is improving as scale builds in its core segment, but the Industrial pullback raises questions about diversification and exposure to cyclical datacenter spending patterns.