Sergey Brin is joining his Google co-founder, Larry Page, in reducing ties to the state where they built their fortunes.Larry Page, left, and Sergey Brin, two Stanford graduate students, founded Google in 1998 and made it a cornerstone of Silicon Valley’s internet industry.

Jenelle Manzi started a nutrition company while performing with New York City Ballet. Now she’s doing her makeup in cabs and taking Zoom meetings as she sews pointe shoes.Jenelle Manzi has been with New York City Ballet for nearly two decades. She is performing in “The Nutcracker.”

Just like past tech booms, the latest frenzy has produced a group of billionaires — at least on paper — from smaller start-ups.

Do Kwon, who designed the virtual currencies Luna and TerraUSD, which plunged in 2022, had pleaded guilty to fraud.Do Kwon, a crypto entrepreneur who went on the run after the crash of two virtual currencies that he created, was escorted by Montenegro police in 2024.

Investors are deciding within 15 minutes whether to shovel millions into A.I. start-ups and taking entrepreneurs weight lifting and rock climbing to get deals done.Colin Roberts, left, and Vivek Nair, the founders of Multifactor, an A.I. start-up, fielded interest from more than 250 investors and raised more money than planned.