Dynamic or 'surveillance' pricing is a relatively common practice. But what's changed is the sheer volume of our personal data available online, and how good AI has become at connecting the dots. With news that Delta Airlines plans to use AI to set up dynamic pricing for a large share of its flights, Marketplace's Kimberly Adams explores how widespread this practice already is in other industries. But first: social media buzz sent an eclectic mix of stocks, or 'meme stocks,' on a volatile ride this week. We look at why traders are making such risky bets. Plus, a snapshot of how things are looking for mortgage brokers and farmers right now.

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