SpaceX vs. Nvidia: How These Two Trillion-Dollar Stocks Compare on Valuation

SpaceX's Public Debut Raises Valuation Questions as Nvidia Trades at Historic Discount

Elon Musk's Space Exploration Technologies (NASDAQ: SPCX) made its long-awaited stock market debut on June 12, 2026, opening at $150 per share. The stock surged to an all-time high of $225.64 in the days that followed, only to retreat back to the $150 range as investors reassessed what is arguably one of the most richly valued companies on public markets.

SpaceX's Valuation: A Closer Look at the Numbers

SpaceX — which spans space transportation, satellite internet through Starlink, and artificial intelligence — currently carries a market capitalization of approximately $2 trillion. With trailing-12-month revenue of just $19.3 billion, that translates to a price-to-sales (P/S) ratio of roughly 103.

For context, the tech-heavy Nasdaq-100 index trades at an average P/S ratio that is 16 times lower than SpaceX's current multiple. That gap has prompted analysts to scrutinize whether the company's growth trajectory can realistically justify such a premium, particularly for investors entering the stock at current levels.

Nvidia: A Contrasting Valuation Story

While SpaceX commands lofty multiples, Nvidia (NASDAQ: NVDA) — the dominant supplier of graphics processing units (GPUs) for AI data centers — is trading at a price-to-earnings (P/E) ratio of just 30.2. That figure represents roughly half of the chipmaker's own 10-year average P/E of 61.6, a notable divergence from its historical norm.

Perhaps even more striking, Nvidia's current valuation sits below the Nasdaq-100 index P/E of 35.2, suggesting the stock may be trading at a discount relative to its big-tech peers despite being one of the most consequential companies in the AI infrastructure buildout.

Looking further out, Wall Street analysts have reached a consensus that Nvidia's earnings per share could reach $12.76 in fiscal year 2028. At that level, the stock's forward P/E ratio drops to approximately 15.4 — a figure that data suggests is unusually low for a company of Nvidia's growth profile.

Vera Rubin: Nvidia's Next Growth Catalyst

Nvidia recently announced that its newest GPU architecture, Vera Rubin, has entered full production and will begin shipping in commercial quantities in the coming months. The platform integrates the Rubin GPU, the Vera CPU, enhanced memory configurations, and upgraded networking components.

According to CEO Jensen Huang, every frontier AI model company intends to adopt Vera Rubin at launch — a level of industry-wide commitment that was not present when the previous Blackwell architecture debuted. Nvidia claims the new architecture enables developers to train AI models using 75% fewer GPUs, while reducing inference token costs by up to 90% compared to Blackwell processors.

If those efficiency gains prove accurate in production environments, they could meaningfully accelerate AI adoption by lowering costs for software providers like OpenAI and Anthropic, potentially driving renewed demand for Nvidia's hardware.

Record Revenue, but Risks Are Emerging

Nvidia's fiscal 2027 first quarter, which ended April 26, delivered $81.6 billion in revenue — an 85% year-over-year increase. The data center segment, which remains the company's core growth engine, generated $75.2 billion of that total, growing at an even faster rate of 92%.

Analysts project Nvidia could reach $392 billion in total revenue for fiscal 2027, potentially climbing to $554 billion in fiscal 2028 — a scale that would begin to approach Walmart's status as the world's largest retailer by revenue.

However, demand signals are showing some complexity. A recent UBS Group survey found that 60% of businesses are now gravitating toward cheaper, less compute-intensive AI models. Uber Technologies' COO publicly noted that justifying AI spending has become increasingly difficult after the company exhausted its entire 2026 AI budget within just four months. Additionally, AI software providers including Anthropic and Microsoft have introduced price increases this year to offset rising infrastructure costs, moves that have not been well received by their customer base.

These developments raise legitimate questions about the long-term trajectory of GPU demand.

What Investors Are Watching

The contrast between SpaceX and Nvidia presents an interesting lens through which to evaluate risk and valuation in the current market environment. SpaceX enters the public markets with enormous brand recognition and a compelling long-term narrative, but its triple-digit P/S ratio leaves little margin for error in execution. Nvidia, meanwhile, carries a valuation that performance data suggests is historically modest relative to its earnings growth trajectory, even as near-term demand uncertainty lingers.

Key milestones to monitor include Vera Rubin's commercial shipment timeline, enterprise AI spending trends through the second half of 2026, and whether SpaceX's revenue base can grow fast enough to begin justifying its current market capitalization.