WSJ Tech News Briefing

The success of SK Hynix and Samsung helped make South Korea’s stock market one of the world’s hottest in recent years—but also one of the most volatile. WSJ reporter Jack Pitcher tells us about the “Rollerkospi,” and what its wild ride could mean for the broader AI trade. Plus, buying a refurbished phone might save you a few hundred dollars, but it could also come with unexpected problems. Personal tech columnist Nicole Nguyen breaks down what to look out for to avoid stress, scams, and spyware. Imani Moise hosts.

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Plus: Best Buy raises outlook following better-than-expected second-quarter results. And Cisco gave its 90,000 employees their own AI agent. Julie Chang hosts.

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Plus: SK Telecom is creating an AI data-center company backed by KKR. And Thinking Machines Lab co-founder Barret Zoph rejoins Google. Imani Moise hosts.

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Plus: Google moves AI responsibility unit out of DeepMind. And the FBI disrupts a China-linked hacking network. Julie Chang hosts.

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Plus: Bill Gates calls for more regulation of AI. And Chinese automaker XPeng plans to start mass-producing humanoid robots. Danny Lewis hosts.

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