Institutional investors piled into AI-related hardware plays in the first quarter of 2026, making storage and semiconductor equipment the market's most crowded trade while simultaneously shunning mega-cap technology leaders like Nvidia, a new Morgan Stanley report on 13F filings shows.
"The current tech sector is not universally embraced but shows extreme structural imbalance," the Morgan Stanley report noted. "This structural divergence has direct and profound implications for the market."
The report, which analyzes the holdings of active institutional managers against their S&P 500 benchmarks, found that SanDisk was the most overweighted stock at +2.16%, an increase of 57 basis points from the prior quarter. Conversely, Nvidia was the most underweighted large-cap tech stock at -2.39%, followed closely by Apple at -2.32% and Microsoft at -1.86%. The "Magnificent Seven" tech giants were collectively underweighted by an average of 125 basis points.
This positioning creates a precarious situation where the most popular AI hardware stocks have limited room for further inflows and are highly susceptible to pullbacks on any news that falls short of perfection. For investors, the divergence highlights a potential rebalancing opportunity, where a shift in sentiment could trigger a significant rally in the under-owned, and heavily discussed, technology titans.
AI Storage Becomes Most Crowded Trade
The concentration of institutional capital is starkly focused on the "picks and shovels" of the AI buildout. Following SanDisk, other heavily overweighted stocks include storage maker Seagate (+0.84%) and semiconductor equipment firms like KLA, Lam Research, and Applied Materials.
According to Morgan Stanley, the logic driving this consensus is a chase for certainty. In a volatile macroeconomic environment with fluctuating interest rates, institutions have prized the clear revenue visibility of companies providing essential hardware for AI data centers. This "selling shovels" logic posits that regardless of which AI software or platform wins, all participants must buy hardware, making upstream suppliers a less speculative bet. The report notes this has led to a self-reinforcing trend of "the more it rises, the more you buy," further concentrating the trade.
Tech Giants Face 'Reverse Crowding'
In a stark contrast, the very companies leading the AI revolution in terms of innovation and earnings are being left out of institutional portfolios. The underweighting of Nvidia (-2.39%), Apple (-2.32%), Microsoft (-1.86%), Amazon (-1.24%), and Google creates a "reverse crowded" scenario.
This "cognitive dissonance," where the market's most-discussed companies are the most under-owned, stems from several factors. The sheer size of these mega-caps makes it difficult for active managers to be significantly overweight. Furthermore, institutions appear to be favoring the perceived safety of hardware orders over the less certain path to monetization for AI software and services.
The risk for the crowded hardware names is that their valuations now depend on flawless execution and ever-increasing earnings, a high bar that increases downside risk. For the underweighted giants, however, the dynamic is flipped. With so many institutional buyers on the sidelines, any catalyst that forces a portfolio re-weighting—such as a blowout earnings report or a new product cycle—could provide substantial upward momentum as managers are forced to chase performance and close their underweight positions.
This article is for informational purposes only and does not constitute investment advice.
