SpaceX Surpassed Broadcom, Meta Platforms, and Tesla in Market Cap on Its IPO Day. Can It Take on Amazon's Market Cap Next?

SpaceX surged to a $2.40 trillion market cap after its June 12 IPO, but the article argues the valuation is stretched at 128x 2025 sales and the company remains unprofitable with a $4.94 billion net loss. Even assuming 30% CAGR revenue growth through 2028, the stock would still trade at about 58x 2028 sales, well above peers like Rocket Lab and AST SpaceMobile. The piece warns that post-IPO enthusiasm and FOMO could fade, with SpaceX potentially underperforming Amazon over the next few days and beyond.

Analysis

The first-order read is not “SpaceX is expensive,” it is that public-market flow has temporarily broken the usual discipline between long-duration optionality and near-term cash generation. In the next few days, the float is too small relative to retail/FOMO demand, so price discovery can overshoot on momentum alone; that creates a mechanically attractive setup for over-owned late buyers, not a durable repricing of the asset.

The more important second-order effect is competitive multiple compression. If SpaceX holds a premium multiple despite losses, it effectively drags the whole private-space complex into a higher-ceiling valuation regime, but the peer set still screens better on both growth and time-to-profitability. That means any sustained rally in RKLB or ASTS is more likely to come from sympathy and relative-value rotation than from re-underwriting their fundamentals.

Over months, the catalyst stack turns negative for SpaceX: secondary supply, debt financing, and capex intensity all become valuation anchors once the initial scarcity premium fades. The market is implicitly paying for three businesses at once, but only one is cash-generative today; if AI investment accelerates before monetization, the equity becomes a de facto funding instrument rather than a pure growth asset. The longer that persists, the more likely the stock trades like a levered private-market holdco than a compounding tech platform.

The contrarian miss is that Amazon may be the cleaner beneficiary of the same AI narrative. If investors rotate from “AI optionality” into “AI monetization,” AMZN has the better setup because its cloud and ads already convert usage into cash flow, while the speculative air-pocket in SpaceX can evaporate quickly once initial allocations are satisfied.

Key Decisions for Investors

• Fade post-IPO momentum in SpaceX via a short only after the first secondary/lock-up-style supply emerges; use a staged approach, because the next few sessions can remain squeeze-prone. Target a 3-6 month horizon with upside capped by flow exhaustion and downside driven by supply overhang.
• Relative-value pair: long AMZN / short the IPO enthusiasm basket via a basket short in RKLB and ASTS on any further sympathy bid. The thesis is that monetization quality and balance-sheet strength should reassert over 1-2 quarters as speculative multiples compress.
• Buy RKLB or ASTS only on a broader risk-off pullback, not into the current momentum. These names can outperform on valuation normalization if SpaceX cools, but their beta to sentiment is high; size for a 10-15% stop and a 20-30% rebound target.
• For options traders, consider put spreads on SpaceX for 1-3 months out after the first sharp gap-up extension. The setup is asymmetric: limited premium paid versus a likely mean-reversion once forced buyers are done.
• If AMZN dips on any rotation out of mega-cap AI, add on weakness; it is the cleaner way to express AI + profitability with lower fundamental risk than the speculative aerospace complex.