SpaceX vs. Nvidia: Best AI Stock to Buy

Nvidia (NASDAQ:NVDA) designs the graphics processing units that run the bulk of the world's AI training and inference workloads, and the stock just slipped to $200.04, down 3.72% on the session as the market digested fresh comparisons between the chipmaker and the newest entrant to the public AI trade. That entrant is SpaceX, which folded Elon Musk's xAI and the X platform into its corporate structure ahead of its listing, turning the rocket company into an unlikely AI play.

At a Glance

• Nvidia trades at $200.04, off 3.72% on the day, with a market capitalization of $5.10 trillion.
• The shares carry a P/E of 30.49 and a slim 0.5% dividend yield.
• The 52-week range runs from $173.66 to $236.54; the current RSI of 42.42 sits in neutral-to-soft territory.
• Last quarter's revenue grew 85% year over year, with analysts modeling 96% growth in the current period.

The framing matters because investors now have two ways to express an AI thesis through a mega-cap name, and the two could hardly be more different. One is a pure-play silicon supplier with audited results and a profit engine humming at scale. The other is a sprawling conglomerate of rockets, satellite internet and a recently acquired generative AI unit.

How the two AI businesses actually stack up

Start with what each company sells. Nvidia's revenue overwhelmingly comes from AI accelerators shipped into data centers. That single-minded exposure has paid off: revenue climbed 85% in the most recent quarter, and Wall Street expects the current quarter to grow roughly 96% year over year. Over the trailing twelve months, the company booked more than $250 billion in revenue and around $160 billion in net income. Demand for its GPUs remains the cleanest signal in the sector.

SpaceX's AI footprint is newer and far smaller. The xAI division — home to the Grok model and the X social platform — generated about $3.2 billion in revenue in 2025, with advertising from X accounting for roughly half of that figure. Growth ran at 22% for the year. Respectable, but a fraction of Nvidia's pace, and heavily dependent on ad spend rather than compute demand.

On the strength of the AI operation alone, Nvidia is the clear standout. The 22% expansion at xAI looks pedestrian next to a chipmaker compounding at 85% on a vastly larger base.

Where SpaceX has the edge

Calling SpaceX an AI company misses most of what it does. Its launch business and broader space ambitions get the headlines, but the connectivity segment — driven by Starlink satellite internet — is the largest, fastest-growing and most profitable piece of the company. If the AI capital-spending cycle cools, SpaceX has other engines to fall back on.

Nvidia is more concentrated. It does sell into gaming, professional visualization, automotive and self-driving applications, but those lines are dwarfed by data-center demand. That concentration is a strength when AI spending accelerates and a vulnerability if it stalls. On diversification, SpaceX wins.

What the Numbers Say

On valuation, Nvidia's P/E of 30.49 is not cheap in absolute terms, but against trailing earnings near $160 billion and forecast growth approaching triple digits, it is defensible. The contrast with SpaceX sharpens the point. Nvidia's $5.10 trillion market cap is roughly 2.5 times SpaceX's recent $2 trillion. If valuations tracked fundamentals, SpaceX would need around $100 billion in revenue and roughly $64 billion in profit to justify 40% of Nvidia's price tag. Instead, its 2025 revenue came in under $20 billion, with adjusted EBITDA of $6.6 billion. That gap suggests SpaceX's price leans more on narrative than on reported results.

Momentum tells a cooler story. With the stock at $200.04 and an RSI of 42.42, Nvidia is neither overbought nor oversold — it is drifting in the lower half of its 52-week band, well off the $236.54 high and closer to the $173.66 floor. The 3.72% single-day drop reflects the kind of volatility that comes with carrying a five-trillion-dollar valuation through every shift in AI sentiment.

Income is almost an afterthought here. The 0.5% dividend yield is token; nobody owns these shares for the payout.

The bull case

Nvidia sits at the center of AI infrastructure buildout, with demand outstripping supply and a software ecosystem that locks customers in. Growth near 96% for the coming quarter, if it lands, would validate a P/E that already prices in optimism. The pullback toward the lower end of the 52-week range arguably leaves less froth in the price than at the peak.

The bear case

Concentration is the obvious risk. A meaningful slowdown in data-center capital expenditure would hit Nvidia harder than a diversified peer. At $5.10 trillion, the law of large numbers makes sustaining hypergrowth steadily harder, and any disappointment against the 96% growth bar could trigger a sharp repricing. The RSI of 42.42 and the slide below $200 hint that some buyers have already stepped back.

Frequently Asked Questions

Is SpaceX an AI company?

Only in part. SpaceX absorbed xAI, the maker of the Grok model, along with the X platform, but its largest and most profitable operations are rocket launches and Starlink satellite internet. The AI unit generated about $3.2 billion in 2025 revenue, roughly half of it from X advertising.

How fast is Nvidia growing compared with xAI?

Nvidia grew revenue 85% year over year in its latest quarter, with analysts projecting about 96% in the current period. SpaceX's AI division grew 22% in 2025. On growth and scale, Nvidia is far ahead.

Why is Nvidia's stock down?

The shares fell 3.72% to $200.04 on the session, part of the ordinary volatility for a $5.10 trillion company whose price swings with every change in AI demand expectations. The stock now trades in the lower half of its 52-week range of $173.66 to $236.54.

What to watch from here

The comparison ends two-to-one in Nvidia's favor on AI strength and valuation, with SpaceX taking the diversification point. The harder question is whether SpaceX's $2 trillion price can grow into financials that currently sit under $20 billion in revenue. Nvidia's premium, by contrast, rests on results that are already on the books. The next earnings print — and whether the 96% growth forecast holds — will test how much of that premium the market is willing to keep paying.