Short sellers notch $8.7B profit as SpaceX shares dip to IPO price
Short sellers have booked an estimated $8.7B in profits as SpaceX’s newly public stock fell back toward or below its IPO price, prompting explanations of how short selling works, who ultimately bears the losses, and why the activity is both risky and seen as useful for pricing overheated assets. Commenters question SpaceX’s lofty valuation, arguing that much of the hype now rests on its AI narrative and speculative projects like orbital data centers rather than its proven launch and Starlink businesses. The feasibility and economics of space-based data centers become a major flashpoint, with many pointing to heat dissipation, radiation, and launch costs as likely deal-breakers compared to terrestrial or ocean-based infrastructure.
Short selling mechanics and “who pays”
- Multiple explanations walk through shorting: borrow shares from a broker (who has them from other clients), sell at current price, later buy back lower, return shares, and keep the difference minus borrow fees.
- Profit effectively comes from counterparties who bought high and later sold low, though specific winners/losers per trade are diffuse (“other market participants,” often via market makers).
- Borrow fees and potential infinite downside are stressed; hedging via options is discussed, with disagreement over how costly/practical that is.
Insiders, lockups, and legality
- Speculation about insiders synthetically selling locked-up shares via shorting is raised, but several replies say this is typically prohibited by law and/or contract and would likely be a crime.
- Brokers generally won’t let you withdraw proceeds from short sales; they’re held as collateral.
Should short selling be banned?
- One subthread asks if shorting should be banned; the dominant response is that anyone with basic market literacy generally supports its role in price discovery and risk-transfer.
Scale of profits and “money from nowhere”
- Some are disturbed that shorts “made” $8.7B quickly, calling it unhealthy.
- Others counter that no new money is created: wealth is reallocated from overly optimistic buyers; the larger “loss” is the market revising its valuation of the company downward.
SpaceX valuation and AI narrative
- Several comments argue current valuation is driven more by an “AI company” story than by launch or Starlink fundamentals.
- There’s skepticism that recent corporate moves (e.g., involving social media and AI ventures) shift losses from an individual to public shareholders, likened to past intra-portfolio bailouts.
Data centers in space: feasibility and economics
- Large subthread debates orbital data centers, which some call essentially a scam.
- Technical challenges cited: heat dissipation in vacuum (radiative cooling needing huge radiators and active pumping), radiation, non-repairability, rapid hardware obsolescence, and launch mass/costs.
- Counterpoints: radiative cooling and hardened hardware are “solved” at satellite scale; mass of solar/radiators may be comparable; costs could fall with reusable rockets; some see potential niche benefits (no local pollution, political/regulatory avoidance, resilience).
- Many still insist terrestrial or ocean/remote data centers are cheaper, easier to cool, and serviceable; space is seen as mainly hype unless launch costs drop dramatically and external constraints on ground data centers become severe.
Broader sentiment
- Technical admiration for SpaceX’s launch and Starlink achievements is widespread.
- Financial and ethical skepticism is strong around current valuation, AI/data-center narratives, and the role of hype and “cult” dynamics in pricing.