Marketplace All-in-One

For his second-to-last time as the host of "Marketplace Morning Report," David Brancaccio spoke with the author of arguably the most influential book on personal finance and investing of all time. First published in 1973, "A Random Walk Down Wall Street" argues that it’s super hard to beat the stock market. Its author, Burton Malkiel, is a Princeton professor emeritus and still going strong at 93. We have that conversation, as well as a preview of March's consumer price index.

This week, a Wisconsin city votes to restrict future data center development. Plus, the astronauts on Artemis II take their journey to social media. But first, Anthropic announced this week it has a new AI model called Claude Mythos Preview.

The company says it’s extremely good at finding security vulnerabilities. So good that Anthropic is not releasing the model to the general public. Instead, it is granting access to a group of over 40 companies and tech organizations, a collaboration called Project Glasswing.

Marketplace’s Stephanie Hughes spoke with Joanna Stern, founder of the media company New Things, to discuss all these topics and more.

The personal consumption expenditures report, which is the Fed’s preferred measure of inflation, showed costs rose 2.8% year-over-year in Feburary. That’s above the target, but never fear: Resilient consumers keep on spending, despite rising prices. What’ll it take to shake things up? Also in this episode: A war-driven plastic shortage costs U.S. manufacturers, we give that GDP revision some context, and Kai visits a nuclear reactor.

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A series of suspiciously well-timed Iran war bets placed on Polymarket have revived concerns about insider trading on prediction markets. But enforcement is something of a gray area. Marketplace’s Meghan McCarty Carino joins Kimberly to explain the relatively recent history of insider trading laws at the CFTC and what it could mean for prediction market platforms. Plus, the debate over whether insider trading on these markets is actually a good thing.

Today, we're returning to our 2019 Brains and Losses series, which investigated the financial exploitation of older Americans. In the years that have followed, AI has only made scams more convincing and easier to conduct. This morning, we're joined by an elder law attorney in Florida to hear how some pioneering laws there are aiming to stop scammers who prey on older people mid-swindle. Also, we’re digging into the Federal Reserve's preferred measure of inflation, which remains stubbornly elevated.