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Arnott Warns: SpaceX IPO Could Unleash Passive Fund Chaos
10 Jun
Summary
- SpaceX IPO may include only 4% float, creating demand/supply imbalance.
- Index funds will buy SpaceX shares regardless of valuation.
- Options market could amplify demand, leading to extreme price swings.
Veteran indexing expert Rob Arnott has raised concerns about the upcoming SpaceX IPO, likening its potential impact on financial markets to a misunderstood lesson from Tesla's past. Arnott believes the structural pressures within passive investing could be significantly amplified by SpaceX's market debut.
The primary issue identified is the expected limited float for SpaceX, with only around 4% of shares anticipated to be publicly available. Arnott highlighted that index funds, which operate by replicating market indexes, would be compelled to acquire SpaceX shares proportional to its market cap, regardless of its valuation.
This valuation-indifferent demand, chasing a scarce supply, could artificially drive up SpaceX's stock price. Compounding this, the active options market, particularly zero-day-expiration contracts, might further amplify speculative demand beyond available shares. Arnott predicts a scenario where SpaceX's market capitalization could soar to $10 trillion, trading at over 700 times sales, before this artificial demand evaporates.
Arnott's advice for investors considering the SpaceX IPO is to acquire shares during the initial offering, gradually trim holdings as index inclusions occur, and invest only an amount they are prepared to lose entirely.
