Maria Aspin

Maria Aspin, NPR News, New York.

For more than 50 years, Walmart stock has traded on the New York Stock Exchange.

It's centuries old and the original power center of Wall Street.

But now Walmart is moving to the rival Nasdaq.

It's a younger stock market, but it's where the shares of many big tech companies trade, like Google and NVIDIA, and crucially, Walmart's mega rival, Amazon.

Chief Financial Officer John David Rainey explained the Nasdaq change to investors using buzzwords like tech-powered and AI.

In other words, at least for investors, Walmart is trying to rebrand as a tech company.

For more than 50 years, Walmart's stock has traded on the New York Stock Exchange.

It's centuries old and the original power center of Wall Street.

But now, Walmart is moving to the rival Nasdaq.

It's a younger stock market, but it's where the shares of many big tech companies trade, like Google and Nvidia, and crucially, Walmart's mega rival, Amazon.

Chief Financial Officer John David Rainey explained the Nasdaq change to investors using buzzwords like tech-powered and AI.

In other words, at least for investors, Walmart is trying to rebrand as a tech company.

Maria Aspin, NPR News, New York.

All eyes were on NVIDIA this week.

The chip company has become a bellwether for the artificial intelligence frenzy, and it's now the most valuable company in the world.

On Wednesday, it dropped another blockbuster report card, telling investors it made another $32 billion in profit in just three months.

But will all the computer chips NVIDIA is selling actually transform the economy?

Investors are increasingly worried that all the money companies are spending on AI won't pay off in the long term.

That would be a rude awakening for the stock market, which has been hitting record highs this year thanks to the soaring value of tech stocks, and particularly AI-related companies.