Stocks up, rebounding as Anthropic unveils uses for AI plugins

NEW YORK – Global shares rose on Tuesday after San Francisco-based startup Anthropic unveiled 10 new ways for business customers to use its AI plugins, which revived enthusiasm that AI would boost profits for businesses, including in investment banking, human resources, and engineering.

In the previous session, stock prices fell as investors worried that heavy capital spending on AI may not translate into profits soon, and were also nervous about President Donald Trump’s tariff policies.

Anthropic’s release boosted stocks just weeks after other releases sparked a selloff in the software and services sectors.

The US Customs and Border Protection imposed a new tariff of 10% on all goods not covered by exemptions. Last Friday, the US Supreme Court ruled that Trump’s emergency tariffs were unlawful. Investors had feared Trump might follow through on a threat to impose 15% tariffs.

The Dow Jones Industrial Average rose 0.76%, the S&P 500 gained 0.76%, and the Nasdaq Composite was up 1%.

Uncertainty from tariffs is starting to take a back seat, and the market is trying to understand the implications of AI for company earnings, said Ken Mahoney, president and chief executive at Mahoney Asset Management in New Jersey.

“We’ve already established that we’re going to lose jobs with AI, and AI may in fact do things better and more efficiently than some of the older software programs out there, but then you start calculating that if these companies are going to let a lot of people go because of AI that means fewer licenses from the likes of Microsoft,” Mahoney said.

“We went through all these areas and all that negativity, and it’s nice to see it bouncing back to about half of where we were yesterday (Monday),” Mahoney said.

European stocks rose 0.23%. Britain’s FTSE finished a shade lower by 0.04%.

MSCI’s All-World index was up 0.52% after dropping 0.62%.

Shares of International Business Machines closed up 2.7%. On Monday, IBM shares plunged more than 13%, their biggest daily fall since late 2000. Anthropic said its Claude Code tool could be used to modernize a programming language run on the company’s systems.

The sheer scale of corporate borrowing and spending on AI has made many investors nervous due largely to the outsized market weight of companies at the heart of the boom. AI chipmaker Nvidia, which reports earnings after the bell on Wednesday, accounts for around 8% of the entire S&P 500. NVIDIA rose 0.7%.

“The biggest concern is margins. And margins, seemingly with new and cheaper technology, is something that’s really bothersome to markets,” Mahoney said.

The yield on benchmark US 10-year notes rose 0.6 basis points to 4.033%. The 2-year note yield, which typically moves in step with interest rate expectations for the Federal Reserve, rose 2.5 basis points to 3.444%.

In currencies, the yen weakened following a report that said Japanese Prime Minister Sanae Takaichi had conveyed her reservations about further interest rate hikes to Bank of Japan Governor Kazuo Ueda. The Japanese yen weakened 0.79% against the greenback to 155.89 per dollar.

The dollar weakened 0.1% against the Swiss franc at 0.774. The euro EUR= was down 0.1% at USD 1.1772 against the dollar.

Sterling was flat at USD 1.3488.

Brent crude settled down 1% at USD 70.77 per barrel, while tensions continued to simmer between the US and Iran. Safe-haven gold dropped 0.1% at USD 5,142 an ounce.

(Reporting by Chibuike Oguh in New York; Additional reporting by Gregor Stuart Hunter in Singapore; Editing by Nick Zieminski, Will Dunham, and David Gregorio)