SpaceX vs. Nvidia: The Best AI Stock to Buy Now

NVDA is winning the valuation argument against SPCX, even as SpaceX's AI division posts eye-popping growth. SPCX's AI unit grew revenue 830% in Q3, but the stock trades at a 41x forward price-to-sales ratio versus 12x for NVDA, per The Motley Fool.

The numbers side by side

• ▸Valuation: SPCX at 41x forward sales carries more than three times NVDA's 12x multiple.
• ▸Profitability: NVDA runs a 66% operating margin. SPCX's sits at 5.7%.
• ▸Growth: NVDA's growth is 106%, strong in its own right, though well below SPCX's 830% AI-division surge.

The Motley Fool's conclusion: NVDA is the safer, more reliable AI holding because it pairs triple-digit growth with high profitability and a far lower multiple. SPCX, by contrast, is in a growth phase that prioritizes market share over margins.

Interpretation: The 830% figure likely reflects a small revenue base, and the 5.7% margin suggests SPCX is spending heavily to scale. At 41x forward sales, the market appears to be pricing in sustained hypergrowth with little room for execution slippage. NVDA's 12x multiple against a 106% growth rate looks, on these figures, like the more defensible entry.