Wall Street is abuzz with adjacent month’s expected blockbuster debut of Elon Musk’s rocket and outer shaper SpaceX, but fewer of the biggest IPOs successful caller years person paid off for investors who bought successful erstwhile the deals came to market.
A Reuters investigation of the 50 IPOs with the highest valuations successful the past 5 years shows that investors would person been better disconnected buying an S&P 500 scale money astir three-quarters of the time. The information underscores the trouble of uncovering bargains among companies whose valuations person often surged agelong earlier the stock’s debut.

An capitalist who bought each of the IPOs tracked by Reuters would beryllium up an mean of 27% done May 21. That compares to an mean summation of 53% successful the S&P 500 implicit those aforesaid periods. The investigation assumes the purchaser would beryllium capable to acquisition shares astatine the IPO price, often not imaginable for a retail investor, oregon simply bargain the broad-market S&P.
Historical returns for investors buying during the frenzied archetypal time of trading of a banal fare adjacent worse, the analysis showed.
“It’s hard to marque wealth unless you’re successful the aboriginal stages of these things and buying these things earlier the IPO,” said Dennis Dick, a proprietary trader astatine Triple D Trading.
SpaceX’s debut is expected to beryllium followed by OpenAI and Anthropic, tapping into request for AI-related companies that has sent the U.S. banal marketplace to grounds highs. Set to commercialized nether the ticker ‘SPCX’, SpaceX filed its prospectus connected Wednesday, with a stock merchantability perchance arsenic aboriginal arsenic June 11. Founder Elon Musk is making immoderate shares disposable to retail investors done Robinhood, SoFi and different trading platforms that would let them to get successful astatine a little price.
The abstraction exploration institution is expected to people a $1.75 trillion valuation that would dwarf each erstwhile Wall Street banal listings, but the Reuters investigation shows that specified superlatives are nary warrant investors volition marque money.
University of Florida prof Jay Ritter, who studies IPOs, said that portion astir nationalist listings underperform the S&P 500 implicit the long run, companies with peculiarly precocious valuations arsenic measured by price-to-sales thin to fare the worst.
At a $1.75 trillion valuation, SpaceX’s price-to-sales ratio would beryllium astir 100, compared to AI heavyweight Nvidia’s price-to-sales ratio of 24. SpaceX mislaid astir $5 cardinal past year.
“Every 1 of these companies wherever investors are consenting to wage a precise precocious price-to-sales ratio has a compelling communicative for wherefore the aboriginal perchance tin beryllium truly bright,” Ritter said. “But, you know, worldly could spell wrong.”

Among the IPOs analysed, AI-related spot designers Astera Labs and Arm Holdings person been the biggest winners. Astera has surged implicit 700% since its 2024 IPO, portion Arm has soared astir 400% since its 2023 debut. Both of those performances outpace the S&P.
Cerebras Systems, different AI spot designer, soared 52% from its May 14 IPO price; it is down astir 27% from its archetypal intraday high. Among the biggest disappointments successful caller years, Chinese ride-hailing elephantine Didi Global was delisted from the New York Stock Exchange successful 2022 pursuing its heavy oversubscribed IPO the twelvemonth before.
Now trading over-the-counter, Didi Global shares are down astir 74% from their $14 IPO price. Electric car shaper Rivian Automotive has slumped 82% since its IPO in 2021 that concisely made it the second-most invaluable U.S. automaker.
The institution continues to suffer wealth for each car it builds, and is burning astir $1 cardinal successful currency each quarter. Shares successful plan bundle steadfast Figma astir quadrupled successful their archetypal trading league past July. But with investors disquieted that generative AI could commoditise Figma’s technology, its banal is down 35% from the $33 IPO price.
Even the hottest offerings tin lag. Chinese e-commerce institution Alibaba, which Reuters did not see successful its analysis, holds the grounds for the largest U.S. IPO by valuation. Touted arsenic the “Amazon of China,” its shares person doubled since its 2014 Wall Street debut, during which clip the S&P 500 has returned implicit 300%.

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