Evaluating Micron, Nvidia, and SpaceX: Which AI Stock Offers the Best $1,000 Investment Today?

Key Points

• SpaceX has $81 billion in AI data center contracts.

• Nvidia’s new Vera processor could help the company become a dominant force in CPUs.

• Micron continues to benefit from an expanding memory market that could be worth $1 trillion next year.

Investors seeking exposure to artificial intelligence have several promising options, including Micron Technology (NASDAQ: MU), Nvidia (NASDAQ: NVDA), and Space Exploration Technologies (NASDAQ: SPCX). While each of these firms leverages AI differently, careful evaluation is needed to determine the most compelling investment. Below is an overview.

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The case for SpaceX

Originally a launch provider, SpaceX broadened its scope after acquiring xAI and constructing extensive data‑center facilities, positioning itself as a comprehensive AI enterprise.

The neocloud division, which provides compute resources to other technology firms, is expanding rapidly, and SpaceX has secured $81 billion in computing contracts, notably with Anthropic and Alphabet.

Analysts view SpaceX as a sovereign AI firm, controlling virtually all aspects of its AI infrastructure, from Terafab semiconductor fabrication to the Grok AI model. This end‑to‑end strategy may prove advantageous as demand for processing power and compute capacity rises.

Nevertheless, the venture entails substantial capital outlays, with nearly $21 billion spent in the previous year and $10 billion already allocated in Q1 2026. Such heavy spending introduces significant risk for investors betting on future returns.

The case for Nvidia

Nvidia retains roughly 86% of the data‑center GPU market, cementing its status as a long‑standing AI investment. However, recent investor sentiment has shifted as some technology firms favor CPUs for AI workloads and agents.

CPUs excel at handling AI agent workloads, prompting companies such as Alphabet to develop proprietary CPUs for deployment in AI data centers.

Despite this challenge, Nvidia is countering with details on its upcoming Vera AI CPU, designed to compete directly with Intel and AMD offerings.

SpaceX, OpenAI, and Anthropic are presently evaluating the Vera CPU, which Nvidia claims delivers 50% higher performance for AI agents compared with the x86 architecture used by Intel and AMD.

While Nvidia continues to focus on its GPU business, its CPU expansion indicates belief in the market’s importance. The primary hurdle lies in eroding Intel’s and AMD’s server‑CPU market shares, currently 67% and 33%, respectively.

The case for Micron

Although the memory market is traditionally cyclical, it is presently experiencing a robust growth phase, with forecasts projecting expansion from over $230 billion in the prior year to exceed $1 trillion by 2027, suggesting ample demand for high‑performance memory.

Micron CEO Sanjay Mehrotra emphasized on the Q3 2026 earnings call that AI has structurally transformed the industry, stating, “We are only at the early stages of the substantial innovation and productivity that can be unleashed.”

Micron’s latest quarterly results reinforce this optimism, with sales rising 345% to nearly $41.5 billion in Q3 and non‑GAAP earnings climbing more than 1,200% year‑over‑year to $25.11 per share.

Although the timing of AI infrastructure spending remains uncertain, Micron’s leadership anticipates heightened memory demand from autonomous vehicles and humanoid robotics. Morgan Stanley projects 1 billion humanoid robots worldwide by 2050, representing a $5 trillion market opportunity.

Additionally, the memory shortage driven by AI data‑center demand is expected to persist through 2028, ensuring sustained revenue and earnings for Micron.

The verdict: Micron is the best AI stock to buy right now

Consequently, Micron emerges as the most compelling AI stock to consider at present. SpaceX’s heavy capital outlays and recent public listing introduce substantial risk, indicating that further validation is needed before it can be deemed a reliable long‑term investment.

Should you buy stock in Micron Technology right now?

Prospective investors should note that the Motley Fool Stock Advisor team has highlighted ten stocks expected to deliver significant returns, and Micron Technology does not appear among them. For example, an investment of $1,000 made when Netflix was recommended on December 17, 2004 would have grown to $377,990; a $1,000 investment when Nvidia was recommended on April 15, 2005 would have reached $1,269,518. Stock Advisor reports an average return of 896%, outperforming the S&P 500’s 206% growth.

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