Semiconductors

AI infrastructure demand has structurally repriced the semiconductor supply chain.

AMD's Data Center segment grew 97% year-over-year to $8.5 billion in Q3 FY2026, Lam Research's memory segment reached parity with foundry at 46% each after doubling its share year-over-year, and ASML has now explicitly declared that planned supply for both 2027 and 2028 will not fully meet customer demand. These are not cyclical signals; they are structural capacity constraints forming simultaneously across design, equipment, and memory. The demand horizon has extended to 2029 and 2030 order interest at ASML, a planning window not present in any prior period.

Geopolitical bifurcation is now a binding operational constraint, not a risk factor.

China's Decree No. 834 and Decree No. 835 create direct legal conflicts with U.S. export compliance obligations for AMD, while Lam Research faces a November 2026 expiry of China's rare earth export control suspension with no confirmed extension. KLA's China revenue surged to 34.5% of quarterly revenue on mature-node demand, amplifying the impact of any incremental restriction. Cadence's DOJ plea agreement and the November 9, 2026 entity-list suspension cliff add a criminal compliance dimension to what was previously a licensing and tariff risk.

Optical connectivity is the next contested layer in AI infrastructure.

Marvell's announced acquisition of Lumentum at an implied enterprise value of $115 billion targets a combined TAM of $550 billion by CY2030, explicitly framing the copper-to-optical transition as a structural architectural imperative rather than a product cycle. Qualcomm is simultaneously investing in co-packaged optics alongside its XPUs, demonstrated with Lumentum and Corning at ECOC 2026, and has attached a $60 billion potential revenue figure to its AWS relationship. The optical layer is now a strategic battleground where silicon vendors are acquiring or partnering to own the full signal chain.

Power management and advanced packaging are capturing disproportionate AI capex share.

Monolithic Power Systems' enterprise data revenue surged 164.6% year-over-year in Q3 2026, now representing 38.5% of nine-month revenue as AI server power management displaces storage and computing as the company's largest end market. ON Semiconductor raised its 2030 AI data center revenue target to greater than $3 billion after acquiring Ferric for $600 million to add integrated voltage regulator capability at the GPU core. Applied Materials deepened its equity stake in BE Semiconductor Industries to approximately 20% to co-develop hybrid bonding and 3D IC architectures, confirming that packaging and power are structural value-capture layers, not commodity adjacencies.