Rambus Inc. (NASDAQ:RMBS) is one of BlackRock’s 30 most important AI stocks right now. BlackRock is the largest institutional holder in Rambus, owning approximately 16.31 million shares, or slightly over 15% of the outstanding shares, as of March 31, 2026, per the filings.
As AI workloads demand greater memory bandwidth, Rambus’ solutions have become more relevant. The company develops high-performance memory interface technologies and intellectual property that enable faster data transfer and improved computing efficiency. While it continues to benefit from AI-related demand, the market has been focusing on the rising valuation.
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Rambus’ stock has performed strongly, in line with many other semiconductor majors, and has risen nearly 14% so far this year, bringing its 1-year returns to 71.38%. With an average forward EPS estimate of $2.95, the stock currently trades at a forward P/E ratio of nearly 45x, as of June 30. Interestingly, this is down from a forward P/E of ~60x in the first week of June as the stock has corrected by around one-third since touching $174.
That said, the long-term fundamental growth outlook remains robust. After the Q1 2026 earnings results, Evercore ISI analysts said that, according to its channel checks, the company’s growth over many quarters should be supported by secular growth drivers related to Agentic-AI for CPUs.
In early June, Insider Monkey highlighted a bullish thesis on Rambus, which noted that the company has yet to fully benefit from rising CPU demand. The thesis can be read here: Is Rambus Inc. (RMBS) A Good Stock To Buy Now?
Interestingly, global equity manager ClearBridge Investments initiated a new position in Rambus Inc. (NASDAQ:RMBS) for its Small Cap Growth Strategy in the first quarter of 2026. The portfolio managers, in the investor letter, commented:
“We believe the rising complexity of server memory will drive content per server growth and, alongside a variety of adjacent product launches, will support robust growth.”
The full investor letter can be read here – ClearBridge Investments Small Cap Growth Strategy’s Q1 2026 Investor Letter.
Rambus Inc. (NASDAQ:RMBS) designs and produces a variety of semiconductor products and memory interface chips. Products range from memory interface chips to silicon intellectual property solutions for interface, security, and high-speed memory technology.
While we acknowledge the risk and potential of RMBS as an investment, our conviction lies in the belief that some AI stocks hold greater promise for delivering higher returns and doing so within a shorter time frame. If you are looking for an AI stock that is more promising than RMBS and that has 10,000% upside potential, check out our report about this cheapest AI stock.
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