Should You Buy The SpaceX IPO? A Planner’s Honest Answer.

First, What You’re Actually Buying

Let’s start with the filing, not the legend. According to SpaceX’s S-1 (it trades as SPCX on the Nasdaq), the company offered shares at $135, raising on the order of $75 billion at an implied valuation around $1.75 trillion — the largest IPO ever. For fiscal 2025 it reported about $18.7 billion in revenue and a net loss of roughly $4.94 billion. That puts the stock at roughly 94 times sales while losing money. (You may have seen “over 100x sales” quoted; the filing’s actual revenue figure puts it closer to 94x — still extraordinary.)

Underneath sit three businesses. Starlink — satellite internet, now past 10 million subscribers — is the largest and the only clearly profitable segment, and it’s the recurring-revenue engine that justifies the price tag. Launch services is the famous, lumpy rocket business. And AI infrastructure (Musk’s xAI, folded in earlier this year) is a heavy cash burn — the source of much of that $4.94 billion loss. You are buying one profitable subscription business, one cyclical launch business, and one money-losing AI bet, wrapped in the most famous name in the market.

The IPO Rules Nobody Explains (And Why You Won’t Pay $135)

Before the buy/no-buy debate, understand the mechanics, because they trip up retail investors every single time.

You almost certainly cannot buy at $135. That offer price went to institutions and a sliver of allocated retail. Everyone else buys once the stock opens for trading — at the market-determined opening price, after the “pop.” If SPCX pops the way marquee IPOs do, the price you actually pay could be materially above $135. The pop isn’t your gain; it’s your entry cost.

The prospectus is the only official source. During the quiet period, the S-1 is it — no earnings guidance, no roadshow promises you can rely on. If a number isn’t in the filing, treat it as rumor.

FINRA Rule 5130 and 5131. Rule 5130 bars “restricted persons” — broker-dealer employees, certain finance-industry insiders — from buying a new issue at the offer price, so the underpriced allocation can’t be funneled to insiders. Rule 5131 (“anti-spinning”) stops banks from handing hot allocations to corporate executives to win their banking business. These protections fall away once the stock trades freely — which is, again, where you come in.

The lockup overhang is unusual here. Most IPOs have a flat 90–180 day insider lockup. SpaceX’s is staged: the main 180-day lockup runs to about December 8, 2026, releasing in tranches — and Elon Musk’s own shares are reportedly locked all the way to June 2027. That means waves of supply can hit the stock months after you buy. Lockup expirations are a classic source of post-IPO weakness.

Reasons To Buy

It’s a genuine platform shift. As we argued when the IPO priced (“SpaceX Is to Orbit What the Model T Was to the Road”), reusable rockets collapsed the cost of reaching space by an order of magnitude. When you make a hard thing cheap, you create whole industries on top of it.

Starlink is a real cash engine. Ten-million-plus subscribers and growing fast is a durable, recurring revenue stream — not vaporware. It’s the most defensible part of the story and the reason the company can carry a trillion-dollar-plus price.

The reusability moat is wide. Competitors are years behind on landing and reflying boosters. That lead is the closest thing to a durable advantage in this business.

Optionality. Launch, Starlink, earth observation, defense, and xAI give multiple ways to win — if even one or two compound for a decade, the platform thesis works.

Reasons Not To Buy — The Honest Risks

The price assumes the future already happened. At ~94x sales with a ~$5 billion annual loss, the valuation prices in years of flawless execution — Starship, Starlink growth, xAI turning a profit. Any slip is a long way down. The CFP material is blunt that valuation discipline matters most exactly when a story is hottest (IN08 — Investment Strategies; CFP Portfolio Audit, May 9).

Governance: you get the rocket, not the steering wheel. Musk reportedly controls roughly 85% of the voting power despite owning ~42% of the equity — a “controlled company.” One person can approve mergers, compensation and strategic pivots unilaterally. You are a passenger.

Customer concentration. A large slice of revenue comes from the U.S. government (NASA, defense, intelligence). Heavy dependence on a few customers and federal contracts is a real, diversifiable business risk (IN04 — Investment Risks).

Single-stock and liquidity risk. A newly public name carries heavy company-specific (unsystematic) risk that diversification is meant to remove, plus thin early float before coverage builds (IN04). And the lockup waves into December 2026 — and Musk’s shares into 2027 — are supply hanging over the price.

How Landmark IPOs Have Actually Performed

“But Amazon was expensive too” is the bull’s favorite line. It’s also only half the data. Here’s how eight landmark IPOs actually did — the legends and the cautionary tales.

*Split-adjusted where applicable. Returns approximate, to mid-June 2026. Coinbase was a direct listing ($250 reference price, not an offering). Sources: public market data; figures rounded.

The honest read: a few platform winners (Amazon, Google, Tesla) rewarded patient owners spectacularly — but plenty of hyped, expensive debuts (Rivian down ~80%, Coinbase below its first trade) destroyed capital for the people who bought the excitement. Notice too that even the great ones were frequently buyable cheaper after the IPO glow faded. Day-one is rarely the only, or best, entry.

The CFP Framework: How To Size It

This is where planning beats opinion. Strip away whether you love or hate the company, and the discipline is the same as for any speculative single stock.

The 5% single-stock cap. Our house rule, grounded in the CFP curriculum, caps any single stock around 5% of the portfolio (IN09 — Capital Asset Allocation & Portfolio Diversification; CFP Portfolio Audit, May 9). Past roughly 10%, a position is formally “concentrated” and makes the whole portfolio inefficient (Module Summary 9). A speculative IPO should stay well under that for everyone.

Asset allocation does the heavy lifting. The classic finding the curriculum cites: about 93.6% of a portfolio’s return comes from asset allocation, only ~5.4% from individual security selection (Module Summary 9). SpaceX is a security-selection decision — by definition a small part of what drives your outcome.

It belongs in a satellite, not the core. The CFP-sanctioned home for a high-conviction speculative bet is an active “satellite” sleeve around a diversified passive core (IN08). And for a brand-new, unproven thesis, the prudent starter is small — on the order of 1.5–2%, not 4–5% (CFP Portfolio Audit, May 9). Four-to-five percent on a one-week-old story is over-conviction.

The Verdict

So — should you buy the SpaceX IPO? The planner’s answer: own the theme, respect the price, and if you buy the stock at all, size it like the speculation it is — after the froth and the first lockup wave, not on the day-one pop.

For most clients, the better expression of this theme isn’t SPCX at 94x sales at all — it’s the broader space-and-defense ecosystem and the diversified funds that already hold the winners, the way the automobile age rewarded owners of the “gas stations and highways” more reliably than owners of any single carmaker. If you want SPCX specifically, treat it as a satellite, cap it under 5%, and let the froth clear first.