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Tuesday, October 27

Is AI a Bubble? What Apollo’s “Zero Payoff” Warning Means for Your Portfolio

Sunlight on a soap bubble floating against a pale sky

A top Wall Street economist says AI hasn’t paid off outside of tech yet, and a giant AI IPO is on deck. Here is a calm way to think about your own 401(k).

Photo: Basile Morin / Wikimedia Commons, CC BY-SA 4.0.

In a few days, three things landed at once. Apollo’s chief economist said AI has delivered no profit boost to most of corporate America. A New York Times op-ed compared today’s AI boom to the housing bubble. And Anthropic, the company behind the Claude chatbot, filed to go public in what is expected to be a giant stock offering.

If you have a 401(k) or an IRA, you’re probably wondering whether to do something. Let’s walk through what was actually said, and what it means for regular investors.

What Apollo’s economist actually said

Torsten Slok, a partner and chief economist at Apollo, wrote in his Daily Spark note: “Despite massive investments and widespread hype around artificial intelligence, the technology has delivered zero financial payoff to corporate America outside of tech.”

He went further: “With no impact on the bottom line, mainstream corporate America is pulling back and starting to view token spending not as a source of growth but as a cost center that weighs on margins.” His summary line is the one worth remembering: “The bottom line is that the AI story will be decided in the S&P 493, not the Mag 7.”

The “Magnificent Seven” are Alphabet, Amazon, Apple, Meta, Microsoft, Nvidia, and Tesla. The “S&P 493” is everyone else in the S&P 500. Slok’s point is that the giants selling AI have done well, but the rest of the economy has to start earning money from it for the boom to hold up.

Not everyone agrees on the outlook. Fortune reported that Goldman Sachs economists led by Jan Hatzius expect AI’s boost to economic growth to peak in late 2026 or early 2027, while their base case is still that AI investment “will ultimately pay off in terms of higher productivity and economywide profits.”

The housing bubble comparison

On October 25, the Times published an op-ed by Jennifer M. Harris, a former Biden White House economic official who now directs the Economy and Society Initiative at the Hewlett Foundation. Her title says it all: “This A.I. Boom Looks an Awful Lot Like the Housing Bubble.”

Harris argues that the companies most exposed to AI make up roughly a third of the S&P 500 and that a lot of AI spending is tied up in complex financing deals that are hard to see from the outside. She closes with a line worth sitting with: “There’s an old chestnut in finance circles that crises take longer, and then happen faster, than you think.”

That’s an opinion piece, not a forecast. But it lines up with what Slok and others keep pointing to: a lot of the market’s value now rides on one theme.

The Anthropic IPO and the excitement factor

Anthropic filed its registration statement with the SEC on October 26 and plans to list on the Nasdaq under the symbol “ANT.” Its filing shows revenue of about $16.3 billion in the first half of 2026, up from about $1.2 billion a year earlier, roughly 14 times as much. It also shows a net loss of about $80.7 billion for the half, most of it from a $72.4 billion accounting charge tied to the changing value of convertible notes and similar instruments.

As of October 27, 2026, the filing doesn’t include a share price range. Fortune reported that the debut is expected around Thanksgiving week and that media reports put the valuation between $1.5 trillion and $2 trillion. Those numbers could change.

Big IPOs draw headlines, and headlines draw everyday money. The SEC’s investor education site warns that an IPO’s offering price “may bear little relationship to the trading price” once shares start trading, and that insiders are often locked up from selling for a period, typically 180 days. Prices can swing hard in both directions.

What this means for your money

  1. You probably already own AI. If you have an S&P 500 index fund or a target-date fund, the biggest AI companies are likely among your largest holdings. Look up your fund’s top 10 holdings before you buy more of the same theme.
  2. Check your mix. Investor.gov gives a simple example: a portfolio that starts at 60% stocks can drift to 80% after a strong run. That’s more risk than you signed up for. Rebalancing every six or 12 months brings it back in line.
  3. Don’t chase the IPO. If you want to own a new stock, wait until it has traded for a while and you can read its first earnings reports. Never put money you’ll need soon into a single hot stock.
  4. Keep your emergency fund in cash. A few months of expenses in savings means you won’t have to sell investments during a slide.
  5. Keep investing on schedule. Regular 401(k) contributions buy more shares when prices fall. Trying to jump out and back in means guessing right twice.

The Bottom Line

Nobody knows if AI is a bubble. Smart people disagree, and even the worried ones can’t say when, or whether, a correction will come. Apollo’s warning really says a lot is riding on one big bet. You don’t have to pick a side. Know what you own, rebalance back to your plan, keep cash for emergencies, and let the headlines be someone else’s problem.

Sources and Further Reading

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