Will the SpaceX IPO Beat the Market?

• Aug 6 · Eight weeks — right shape, wrong clock. SPCX peaked at a $201.80 close on June 16 (inside the forecast band), then round-tripped: first close below the $135 offer on July 16, and $108.27 on August 5 after the first earnings report. Every checkpoint the forecast has reached is inside its band, but the decline it put in months 3–6 arrived in month 2. Full scoring and a revised forward call are in the update section.
• Jun 12 · Day one — hit. Predicted: opens up 10–20%, near $157, closes above the offer. Actual: opened $150.00 (+11.1%), closed $160.98 (+19.2%) — both inside the band. The miss: a midday spike to $176.49 (+31%) was more euphoric than called, briefly crossing the ~$175 bonus-unlock trigger (Step 4).

The answer

Probably not. From the $135 offer, SPCX has ~30% odds of beating the S&P 500 over three years, and a day-one buyer does worse. The expected path: a solid, not euphoric debut (85% odds it closes day one above the offer); a squeeze-prone summer on the ~4% float; a bend down in months 3–6 as staged lockups expand supply ~14x; an end to 2026 above the offer (median $145) but below the summer high. The way this breaks is the Musk premium: if SPCX trades as a belief asset rather than on fundamentals, the multiple can persist far longer than history allows. Part 1 gives the full forecast; Part 2 gives the evidence and the recent record behind it.

Written June 11 and left as written. Eight weeks on, SPCX is at $108.27, below the offer and 46% off its June high close, and the answer above still stands from $135 — but the reason has changed, and from today's price the odds are better. See the August 6 update.

The reasons, in brief:

• Valuation dominates. ~97x sales while unprofitable is far past the worst historical bucket. IPOs above 40x sales averaged −59% market-adjusted over three years. The businesses can't grow into $1.75T by 2029; upside requires the market to keep paying for belief, not revenue.
• Scale, profitability, and valuation at listing predict returns. Founder control helps, but less. The framework's blind spot is the belief-asset re-rating (Arm +500%), which is exactly SPCX's bull case, so the upside percentiles are widened, not ignored.
• Falling below the offer is the norm. 56% of IPOs are under their offer price three years out. The damage concentrates in months 7–24, after lockups clear and hype meets reported numbers.
• Entry price matters more than the company. Large IPOs bought at the offer beat the market (+13% over 3 years); buying the first-day close loses (median −25.7% at 3 years; 10 of 11 recent deals negative from their day-one close).

The SPCX forecast, on the record

The deal: SpaceX prices after the close on June 11 and begins trading June 12 on Nasdaq as SPCX, 555.6M Class A shares at a fixed $135. The book closed 3.5–4x oversubscribed (~$250B in orders), but the gray market (unofficial venues where shares trade before listing) saw its premium collapse from ~60% in May to ~16%, about $157, by June 10.

The forecast is built in four steps: score the factors, test the price arithmetic, compare past mega-IPOs and backtest the framework against them, map the supply schedule. The trajectory and numbers at the end follow from them.

Step 1 · Score SPCX against the factors

Signal is direction; weight is how much that factor historically moves 3-year returns (effect sizes are in the Part 2 table). A positive signal with low weight barely moves the forecast; the deal is decided by the high-weight rows.

Step 2 · What the $1.75T price has to assume

Revenue cannot grow into this price in three years. Upside from $135 is a bet that the market keeps paying for Starship/Mars optionality, not for the businesses. At $135, SpaceX carries ~12.96B shares for a $1.75T valuation against $18B of 2025 revenue. Run the businesses forward and Starlink ($11.4B growing ~50%) reaches $55–60B by 2029; launch (~$6B, growing slower) adds $10–13B; call it ~$70B total. To merely hold $135 through 2029, the market must still pay ~25x sales. At 15x the share price is ~$81 (−40%); at 8x, top-decile for a mature growth company, ~$43 (−68%). This is why valuation dominates the factor score and the bear tail below is fat.

Step 3 · The mega-IPO comparables and the framework's track record returns from offer, approximate

The better reference class for a $1.75T listing is the largest-ever IPOs; the factor averages come from thousands of mostly small deals far outside this sample. Scoring the framework against each comparable, using only what was knowable on its listing day, it got 5 of 6 right on first-year entry risk and ~3 of 6 at three years. Line color shows the verdict:

Step 4 · The supply schedule est. tradable share of company

Supply is the highest-confidence input. Lockups (agreements barring insiders from selling for a set period) normally hold an IPO's tradable float steady until day 180, when supply roughly doubles. SPCX's float grows ~14x in six months, and the bonus tranche is price-triggered: a rally above ~$175 itself releases more stock. A third of the small starting float went to retail investors, three times the mega-cap norm. This drives the months 3–6 bend in the trajectory below.

The forecast frozen pre-trade · June 11, 2026

The four steps above point one way: strong demand and a tiny float early, then mounting supply against an unsupportable multiple. In sequence:

In numbers, the targets and probabilities below are subjective calibrated estimates built from the cohort base rates, adjusted up for the mega-IPO selection effect and the framework's right-tail blind spot (both Step 3), and down for the supply schedule (Step 4). P10/P90 are 10th/90th-percentile outcomes; the band should contain ~80% of what happens, and medians should be beaten about half the time.

Scoring the forecast at eight weeks

Through August 5 SPCX had traded 38 sessions, reported one quarter, and reached the first of its lockup cliffs. That is enough to score the near-term calls and to say what the frozen model got wrong about the mechanism. Everything in Part 1 above is untouched; this section sits beside it.

What actually happened milestone closes, not evenly spaced

The squeeze the forecast expected happened, harder and faster than called: SPCX closed at $201.80 on June 16, its third session, having touched $225.64 intraday that day — 67% above the offer at the high, 49% at the close. It closed well clear of the $175.50 performance trigger on the way, meeting the condition for the bonus tranche. Then it gave all of it back. It joined the Nasdaq-100 on July 7 into a falling tape, aborted the Starship 13 launch on July 16 (roughly $100B of market value in a day), closed below the offer for the first time that same session, and bottomed near $108 into the first earnings report. Q2 revenue beat by 13% and the stock rose 9.4% on the day — then fell 13.6% the next session when investors read the capex line.

The checkpoints, scored

What the frozen model got wrong about the business

The denominator is growing much faster than Step 2 assumed. That step ran $18B of 2025 revenue forward to ~$70B by 2029 and concluded the price could not be grown into. Q2 2026 revenue was $7.81B, up 92%, beating consensus by 13%: connectivity $4.3B (+66%, 12M Starlink subscribers, $1.66B of segment operating profit) and an AI segment — xAI, X, and cloud — at $2.56B, up 247%, which the frozen model did not include at all. SpaceX guided for the first time in its history and raised the full-year number. On a ~$38B 2026 revenue base, the $1.43T market cap is roughly 37x sales, not the 97x trailing multiple the forecast was built on. The valuation half of the bear case is materially weaker than it was in June.

And a bear driver replaced the old one. The frozen forecast's downside was multiple compression: a rich price grinding lower as supply arrived. The market is now pricing something the forecast never modeled — a funding gap. At the Q2 run rate, 2026 capex lands near $65B against roughly $38B of revenue and a negative bottom line. The $75B IPO raise covers about one year of that. The three-year bear case is no longer mainly "the multiple has to come in"; it is "the buildout has to be financed," which means new equity, convertible paper, or debt, at prices the company does not control. This is the single largest structural change to the thesis since June 11.

The revised forecast revision 1 · August 6, 2026 · from $108.27

Same construction as the original: subjective calibrated estimates, P10/P90 meant to contain ~80% of outcomes, medians meant to be beaten about half the time. The frozen June 11 numbers are unchanged above and both sets stay on the record. Three changes drive the revision — supply is arriving faster than scheduled, revenue is compounding faster than modeled, and financing risk is now explicit.

What predicts IPO returns

The average IPO underperforms the market by about 3.6% per year for five years after listing (Jay Ritter's dataset: 9,253 US IPOs, 1980–2024), and most of that damage sits in small listings. For a $75B deal, what matters is how the factors below separate winners from losers among large IPOs. They are the same factors scored against SPCX in Part 1, measured as 3-year market-adjusted returns, meaning the IPO's return minus the market's over the same window.

IPO-specific factors, ranked by evidence

Does founder ownership predict better returns?

Yes, with caveats, and it is the factor a SpaceX buyer leans on most. Founder-CEO firms among large US companies earned +8.3%/year benchmark-adjusted over 1993–2002 (+4.4%/year after controls, so not purely a tech-sector artifact). Dual-class IPOs, the classic founder-control structure, returned +29.5% over 3 years vs +18.0% for single-class IPOs; among tech IPOs, dual-class beat the market by 13.8% while single-class lagged by 15.4%.

How often IPOs fall, and when

Falling below the offer price is the norm, not the exception (9,195 US operating-company IPOs, 1975–2021, Ritter): 56.1% trade below offer three years later (57.1% at five, over a third losing more than half), and the median three-year return is −16.6% from the offer, or −25.7% from the first-day close that a day-one buyer actually pays; rare huge winners pull the mean up to +38.5%. Small listings drag these base rates down and large deals clear them more often, but the shape holds at every size.

When the declines happen

The underperformance is back-loaded: IPOs trade roughly market-like for six months, and the damage concentrates in months 7–24 (vs size-matched firms, 1980–2024).

The recent record, 2023–2026

Big deals systematically beat the long tail of small listings that make up most of every cohort. Every dot below is a real deal: all 482 operating-company US IPOs from 2023 through June 2026 with a reported deal size and return (stockanalysis.com), excluding SPACs and 27 micro-listings with manipulation-pattern spikes, the amount raised against the return from offer. Green is the 199 deals that raised $100M or more; black is the 283 smaller listings. The few winners above +500% sit at the top edge, with true returns in the tooltips:

The pattern, four years running

Every cohort since 2023 repeats the same shape (Renaissance Capital cohort data: deals with ≥$50M market cap, ex-SPACs):

• Large deals carry everything. The $100M+ slice beat its full cohort at every year-end (+27% in 2023, +29% in 2024, +18–21% in 2025), a premium of roughly 20–30 points. The median listing loses money; only 38.3% of 2025's IPOs ended the year above offer.
• Year-end averages flatter; seasoning reveals. Each cohort finishes its listing year roughly flat (+4%, ≈0%, +1–2%), then decays as lockups clear: 2023's flat year-end became a −30.9% three-year hold (−88.3% vs the market), and 2025's large deals that were above offer at year-end flipped negative through H1 2026.
• Supply grows into weakening returns. Issuance climbed every year ($19.4B, $29.6B, $44.0B raised, and 2026 listings running +17% ahead year-over-year) while the Renaissance IPO Index fell −8% in Q1 2026 vs the S&P's −4%, the hot-market profile that historically precedes the worst cohorts.
• Winners cluster in the cycle's hot theme (AI infrastructure and stablecoins now); fintech/BNPL and crypto cluster among the losers. All of it matches the factors above: big, profitable, reasonably priced, bought at the offer.

The pop fades: day one vs today 2025–26 deals with verified day-one closes

Buying at the day-one close lost money in 10 of these 11 deals (median −45%), the live demonstration of the finding above that the pop is "captured by IPO allocants, not aftermarket buyers." Each deal's day-one pop, next to what a buyer at that day-one close has made since:

The scorecard

The answer, once more: probably not. SPCX should clear the $135 offer on day one, run hot through the summer, bend down as insider stock unlocks, and trail the S&P 500 over years 1–3. The forecast was frozen on June 11, 2026, before the first trade. The page's presentation has been edited since, but every frozen target and probability is unchanged, and the git history plus an archive.org snapshot are the audit trail. Score it on hit rates across all the intervals, not on any single miss.

Standing at revision 1 (August 6, 2026): six near-term calls hit, one missed on duration, one right in direction but two months early, one immaterial, two still open. Every checkpoint reached landed inside its band; every error was one of pace, and all in the same direction — the model was slow. The revised numbers in the update are added beside the frozen ones, never over them, and each revision is dated so the drift is visible. Both sets get scored.

Methodology & caveats

• Prices are intraday snapshots from June 10–11, 2026; exact percentages may drift a few points with quote timing.
• The 38.3% above-offer figure and year-end cohort averages are Renaissance's December 2025 snapshot, not June 2026. With Figma and Bullish since below offer, today's share is likely lower.
• Figures marked "well-established" or "established" were verified against the cited primary studies; "canonical" items are standard findings from the IPO literature (Ritter 1991 and Ritter's data files) reported as published. All are long-period averages and may not hold for any given year or stock.
• Cohort counts, raises, and year-end and large-deal averages are Renaissance Capital's (deals ≥$50M market cap, ex-SPACs); "listings" counts (stockanalysis.com) include SPACs and micro-caps, and the two should not be mixed. Ritter's 2023 cohort average (−30.9% over 3 years) uses his stricter operating-company set with returns through Dec 31, 2025; the market-adjusted shortfall partly reflects the S&P rally over the same window.
• The scatter shows 482 US IPOs from 2023 through June 11, 2026 with a reported deal size and return on stockanalysis.com's year pages (Deal Size and Return From IPO Price columns), pulled June 12, 2026. 321 SPACs are excluded, identified by name ("Acquisition", "Merger", and similar) or by the $10.00 blank-check unit price combined with a sponsor-style name, with operating companies that price at $10.00 (such as Newsmax and U.S. GoldMining) kept; this matches the report's other statistics, which are ex-SPAC, since a SPAC at IPO trades at trust value and says nothing about operating-company listings. 67 listings lacking a return or deal size are omitted (these counts include SPACs, unlike Renaissance's); nine large deals with missing deal sizes (including ARM, Astera Labs, Reddit, CAVA, Klaviyo, Tempus, Kaspi.kz, Karman, and Metsera) are included with gross proceeds from contemporaneous reports. A further 27 listings that raised $30M or less yet showed returns of +150% to +4,221% are excluded as suspected manipulation: that profile matches the micro-cap pump-and-dump pattern regulators have repeatedly flagged in small IPOs, not genuine investable returns. Returns are June 12 quotes and can differ a few points from the article's June 10–11 snapshots. The $100M+ split uses the reported deal size directly. Returns above +500% (2 deals) are drawn at the +500% edge with true values in tooltips. SPCX, priced June 11 with no trading history, is excluded.
• The fall-frequency statistics (56.1% and 57.1% below offer at years 3 and 5) cover 1975–2021 IPOs, measured from the offer; from the first-day close the medians are worse (−25.7% and −32.0%).
• The SpaceX section was written June 11, 2026, before the first trade, and is left unrevised as a test of the framework. Deal terms are from the S-1 and contemporaneous reports; the ~97x P/S is the $1.75T valuation over $18B of 2025 revenue. Gray-market prices (Hyperliquid) are thin and indicative only, and historical cohort averages may not describe a one-of-one mega-cap listing.
• Mega-IPO comparable returns are approximate (from the offer, split-adjusted, rounded to ~5%, ex-dividends) and are reference points for shape, not precise figures; the price-to-sales chart in Step 2 uses the multiples stated in the comparables table plus approximate listing multiples and 3-year returns, rounded, for about twenty other prominent large US listings, with pre-revenue Rivian drawn at the axis edge. The backtest signals are retrospective scorings and carry hindsight risk despite using only at-the-time observables.
• Day-one closes behind the pop-fades chart are from contemporaneous press reports; BitGo, SailPoint, and Venture Global were reported only as "settled near" levels, so their returns are imprecise by a few points. Some sizable 2026 deals (Madison Air, Fervo, INNIO, BX Digital Infrastructure) lack a verified day-one close and are excluded. "Since day-1 close" returns use the June 10–11 snapshots.
• The SPCX targets and probabilities are the author's subjective calibrated estimates, not a fitted model, and are published to be scored. The 2029 revenue scenarios assume no major new revenue lines (Starship commercial cargo at scale would change them).
• The August 6, 2026 update uses closes through August 5 ($108.27). Only independently corroborated prices are plotted: the $135 offer, the $160.98 day-one close, the $201.80 high close and $225.64 intraday high (both June 16), the $131.11 first close below the offer (July 16), $108.37 (July 31), $125.33 (August 4, earnings day) and $108.27 (August 5). Intermediate daily closes were inconsistent across sources and are omitted rather than smoothed, so the x-axis of the round-trip chart is ordered by event, not evenly spaced in time. The market comparison uses SPY as the S&P 500 proxy: $737.76 on June 11 to $769.79 on August 5, +4.3%.
• The ~37x revised sales multiple is the $1.43T market cap at the August 5 close over an estimated ~$38B of 2026 revenue, which is a third-party full-year estimate rather than company guidance; SpaceX guided for the first time with Q2 results and raised the number, but did not publish a figure this page could verify. Segment figures, capex, and the loss per share are from the Q2 2026 report of August 4. The 2026 capex estimate near $65B annualizes first-half spending of $28.5B plus guidance and is the author's arithmetic, not a company forecast.
• Revision 1's targets and probabilities are subjective calibrated estimates on the same basis as the frozen set. They are added beside the June 11 numbers, which are unaltered; both remain on the record and both will be scored. Later revisions will be dated and appended the same way.