David Brancaccio

Our supervising senior producer, Meredith Gerritsen-Morby.

It's Marketplace Morning Report from APM, American Public Media.

How just a narrative with no new facts can wipe billions in value off the stock market.

I'm David Brancaccio in Los Angeles.

The stock market's big drop yesterday minus 821 points or 1.7 percent for the Dow is being put down in part to uncertainty over tariffs after many were deemed illegal.

Today, a new 10 percent global rate took effect, with President Trump calling for 15 percent.

Something else spooked market players yesterday who are forwarding around a stock analysis firm's doomsday thought experiment about possible negative effects of artificial intelligence for the economy.

Marketplace's Nova Safo explains.

Yet there's this analysts at Wall Street powerhouse Goldman Sachs calculate that artificial intelligence contributions to U.S.

economic growth last year was in the billions, the trillions.

Goldman's calculation for how much AI boosted GDP last year, quote, basically zero.

We're all supposed to start our next sentence with the two words, but eventually.

The online marketplace eBay is buying Depop, a secondhand clothing site popular among teens and 20-somethings, for $1.2 billion.

Etsy has owned it for five years.

It's an interesting bet.

Here's Marketplace's Samantha Fields.

If you have an offspring 18 and under, they can now get signed up for a tax-protected investment account that were part of the big spending and tax law from last summer.

Parents should get to know this code, the 530A account.

If the youngster was born in 2025 or this year, the Treasury will top up that account with $1,000.

Young Amelia or Liam needs a Social Security number.