SpaceX-Anthropic-OpenAI Is a Cocktail With a Hangover

That’s SpaceX out of the way. Next, investors will have to absorb the artificial-intelligence titans behind the Claude and ChatGPT chatbots, Anthropic PBC and OpenAI. It’s a heady cocktail for a market that isn’t used to swallowing initial public offerings of this size individually let alone in quick succession. How long will the aftereffects take to appear?

SpaceX’s IPO is record-breaking. While founder Elon Musk has been able to raise $75 billion at a $1.8 trillion valuation, this is a massive experiment in what the market can absorb.

IPOs are by definition a gamble and the risk-friendly hedge fund community typically plays a key role in underpinning demand until the wider market provides support. SpaceX is being fast-tracked into the Nasdaq-100 index and will have a huge retail following. We just don’t know how the technical factors are going to play out.

The IPO pitch centered on AI business services. But SpaceX is also part aerospace, part telecoms. One question is how investors in these various sectors make room for it. That’s before we get to the unknown unknowns.

Anthropic and OpenAI could seek valuations of more than $1 trillion each, Bloomberg News reported. They need SpaceX to perform, not just on launch day but in the weeks after. If people lose money on one IPO, they drive a harder bargain on the next one. But the main thing on more careful investors’ minds is whether the market can digest all of this.

One way to answer is to compare the amount of stock arriving with the amount leaving. Analysts at Goldman Sachs Group Inc. see corporate share issuance touching $1.1 trillion this year, taking in both IPOs and new stock sales by existing listed companies, such as last week’s $85 billion fundraising by Alphabet Inc.

But share buybacks are expected to hit $1.3 trillion, driven by the financial sector and companies that benefit from AI capital spending, meaning investors have money to put to work. Factor in potential cash takeovers and, yes, it looks like the market has the requisite stomach. The balance gets more challenging in 2027, when Goldman’s research cautions on the impact of employees and pre-IPO investors selling their shares as so-called lock-up periods expire.

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