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SpaceX IPO: Should You Buy SPCX or RKLB?

Jun 16, 2026
Bobby Quant Team

💡 Key Takeaway

Both SpaceX and Rocket Lab trade at extremely high valuations, making them risky investments despite their ambitious growth plans.

What Happened: A Giant Enters the Market

Space Exploration Technologies (SPCX) has completed the largest IPO in history, instantly becoming one of the world's most valuable public companies. The massive debut, with a market cap of $2.1 trillion, has drawn intense investor attention and capital away from other players in the space economy.

One of those players, Rocket Lab (RKLB), has felt the pressure. Its shares have fallen 32% from recent highs as the market anticipates capital rotating from smaller space stocks into the new SpaceX behemoth. This sets up a key question for investors: buy the dip in Rocket Lab or pivot to the new titan, SpaceX?

SpaceX's story is built on immense ambition, spanning from its core rocket launch business to global satellite internet via Starlink and futuristic projects like orbital data centers and Mars colonization. Starlink alone is an $11.4 billion business growing at 50% annually.

The company's near-term growth catalyst is AI, fueled by recent multi-billion dollar computing service contracts from giants like Alphabet. However, with 2025 revenue of just $18 billion, SpaceX trades at a staggering valuation of over 100 times sales.

Why It Matters: Valuation vs. Vision

This IPO matters because it resets valuation expectations for the entire space sector. SpaceX's sky-high price-to-sales (P/S) ratio of 100+ creates a challenging benchmark and highlights the premium investors are paying for future potential rather than current profits.

For Rocket Lab, the direct competitor comparison becomes unavoidable. While Rocket Lab has a more focused model on launch services and space systems, with revenue growing 1,000% over five years to $680 million, its valuation is also extreme at a P/S ratio of 89.

The success of Rocket Lab's upcoming, larger Neutron rocket is critical for its growth story and ability to justify its valuation. Any further delays could put significant pressure on the stock, especially with SpaceX now dominating investor mindshare.

Ultimately, the IPO forces a sector-wide reality check. Investors are betting heavily on long-term technological triumphs in a notoriously difficult and capital-intensive industry. The risk is that current stock prices have already discounted decades of perfect execution.

Source: The Motley Fool
Analysis generated by Bobby AI quantitative model, reviewed and edited by our research team. This is not financial advice. Always do your own research before making investment decisions.

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Bobby Insight

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Avoid both SPCX and RKLB at their current elevated valuations.

While both companies have compelling long-term visions, their stock prices have run far ahead of reality. SpaceX's $2.1 trillion valuation and Rocket Lab's $60 billion market cap, both at nearly 100x sales, price in flawless execution for years to come. The risk-reward is unfavorable for new money.

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What This Means for Me

means-for-me
If you hold RKLB, you may be experiencing dilution of attention and capital as funds flow into the new SpaceX IPO, adding volatility. Investors with exposure to the broader space sector should prepare for continued valuation scrutiny as SpaceX sets a new, extremely high benchmark. For those holding Alphabet (GOOG/GOOGL), the SpaceX partnership is a minor positive but doesn't warrant a portfolio change.
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What This Means for Me

If you hold RKLB, you may be experiencing dilution of attention and capital as funds flow into the new SpaceX IPO, adding volatility. Investors with exposure to the broader space sector should prepare for continued valuation scrutiny as SpaceX sets a new, extremely high benchmark. For those holding Alphabet (GOOG/GOOGL), the SpaceX partnership is a minor positive but doesn't warrant a portfolio change.
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Stock to Watch

StocksImpactAnalysis
RKLB
Negative
Rocket Lab's stock has sold off ahead of the SpaceX IPO and remains expensive. Its fate is tied to the successful debut of its Neutron rocket and its ability to grow into its $60 billion market cap.
GOOG
Neutral
Alphabet is a key customer, signing a major AI computing contract with SpaceX, which is a positive business development but doesn't directly alter its investment thesis.
GOOGL
Neutral
As with GOOG, the contract with SpaceX is a business partnership that supports its AI initiatives but is not a primary driver for the stock.

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