Top AI Infrastructure Stocks to Buy Now: Nicholas Mersch's Picks (Micron, Lumentum, Vicor) (2026)

The AI Infrastructure Boom: Unlocking the Next Wave of Tech Opportunities

The world of technology is abuzz with the ongoing AI revolution, and Nicholas Mersch, a seasoned portfolio manager, has some intriguing insights to share. In his recent top picks, Mersch highlights the evolving landscape of AI infrastructure and the companies poised to thrive in this new era.

The AI Infrastructure Deficit

Mersch's core argument revolves around the structural underinvestment in AI infrastructure. This deficit is particularly evident in the semiconductor market, where the demand for AI-related computing power is skyrocketing. The recent earnings period revealed two pivotal developments: increased capital expenditures and hardware's newfound pricing power. These trends indicate a significant shift in the supply chain dynamics, which investors should closely monitor.

I find this perspective compelling because it challenges the conventional wisdom of focusing solely on software innovations. Mersch argues that the real value lies in the companies providing the hardware and infrastructure that enable AI advancements. It's a classic case of investing in the picks and shovels during a gold rush.

The Evolving Value Chain

AI's evolution is a fascinating journey, with each step demanding more computational power. As AI advances from generative to reasoning and agentic capabilities, token costs plummet while usage skyrockets. This exponential growth in demand is straining the existing infrastructure, leading to token explosions and service outages. Consequently, companies are scrambling to secure scarce resources, driving up capital expenditures across the board.

What many fail to grasp is the magnitude of this infrastructure demand. The consensus has been consistently wrong, underestimating the surge in Capex. This oversight presents a unique opportunity for investors to capitalize on the evolving value chain. The cash flow is shifting from megacap software companies to semiconductor and infrastructure providers, creating a new power dynamic in the market.

The Micron Advantage

Micron, one of Mersch's top picks, exemplifies the scarcity trade within the AI infrastructure space. High-bandwidth memory capacity is sold out, and DRAM pricing is on the rise due to disciplined supply management. Meta's decision to increase its capital expenditures, citing memory pricing as a factor, is a powerful endorsement of Micron's value proposition. The company's focus on allocation rather than market share is a strategic move, especially with Samsung still struggling to qualify for Nvidia's HBM requirements.

Personally, I find Micron's position intriguing. While the memory market is notoriously cyclical, Micron's current setup suggests a longer-than-expected cycle. The increasing HBM intensity in AI systems could extend the upswing, rewarding patient investors. However, the bears' argument about memory over-earning and eventual capacity overshoot cannot be ignored, making Micron a trade for the cycle-savvy investor.

Lumentum: Illuminating the AI Data Centers

Lumentum, another standout pick, manufactures lasers and optical components that facilitate high-speed data transfer between AI chips. With Nvidia's GPUs demanding ever-increasing bandwidth, Lumentum's products are in high demand. The company's revenue growth and profit margins are impressive, and it is struggling to keep up with customer orders. Nvidia's significant investment and order commitment further solidify Lumentum's position in the AI supply chain.

What makes Lumentum particularly fascinating is its role in enabling the next generation of AI servers. Their optical transceivers, optical circuit switches, and co-packaged optics are set to revolutionize data center efficiency. As hyperscalers embrace these innovations, Lumentum's value becomes increasingly evident. In my opinion, this is a classic case of a company riding the wave of technological progress.

Vicor: Powering the AI Revolution

Vicor, the final pick, addresses a critical challenge in AI hardware: power delivery. Their Vertical Power Delivery solution is a game-changer, optimizing power efficiency and space utilization. With AI chips consuming massive amounts of power, Vicor's technology becomes indispensable. The company's impressive revenue growth, expanding gross margins, and burgeoning backlog are testaments to its success.

One detail that I find especially intriguing is Vicor's hidden royalty business. By licensing its patented power-conversion architectures, Vicor is creating a steady stream of revenue. This strategic move adds a layer of resilience to the company's business model, making it an attractive long-term investment. From my perspective, Vicor is not just a provider of cutting-edge technology but also a savvy business operator.

The Bigger Picture

Mersch's picks underscore the broader trend of AI's insatiable appetite for computing power and infrastructure. The market is rewarding companies that can deliver the hardware and infrastructure necessary to support AI advancements. However, it's crucial to approach these investments with a nuanced understanding of the technology and market dynamics. The AI infrastructure boom is not a fleeting trend but a long-term shift that will reshape the tech industry.

In conclusion, Nicholas Mersch's insights provide a valuable lens through which to view the evolving AI landscape. By focusing on the infrastructure providers rather than the software innovators, investors can identify opportunities that might otherwise be overlooked. The AI revolution is not just about algorithms and code; it's about the hardware and infrastructure that make it all possible.

Top AI Infrastructure Stocks to Buy Now: Nicholas Mersch's Picks (Micron, Lumentum, Vicor) (2026)
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