Gmail. Google Maps. The App Store. Every one was dismissed like an absurd April Fools’ prank. Every one became unavoidable. And every one came with a price tag nobody saw coming.

Regina Barzilay wasn’t looking to study cancer. She had made a name for herself as an artificial intelligence (AI) researcher at the Massachusetts Institute of Technology (MIT) in Cambridge, ...

The memory specialist may be a hot stock in the AI space now, but for sustainable long-term options, look to the diversified tech giants.