LongLITESeptember 30, 2026

ClearBridge Large Cap Growth Strategy on Lumentum Holdings

Thesis

Lumentum offers exposure to increasing optical connectivity requirements as AI data centers expand. ClearBridge believes the infrastructure supporting AI adoption extends beyond processors and includes technologies enabling efficient data movement. The company was purchased as part of a broader diversification of the strategy's AI infrastructure exposure. Position sizing will depend on the evolution of the opportunity and valuation.

“We also added Ciena and Lumentum, reflecting rising optical connectivity requirements in AI data centers”
ClearBridge Large Cap Growth Strategy — Large Cap Growth Strategy - Third Quarter 2026 Portfolio Manager Commentary

Key risks

  • AI infrastructure investment could weaken if leading laboratories experience slower monetization.
  • Elevated valuations across the AI infrastructure ecosystem could create downside risk.
  • Volatility in high-momentum AI-related equities could affect the shares.

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