A conceptual image showing stock exchange numbers and flames.
Sean Gladwell | Moment | Getty Images
After a blockbuster year for venture capital deals, some investors worry the boom times may not last much longer.
Tech start-ups raised a record $621 billion in venture funding globally in 2021, according to CB Insights, up more than double from a year earlier. The number of privately held “unicorn” firms valued at $1 billion or more rose 69% to 959.
Private companies such as Stripe and Klarna saw their valuations swell to the tens of billions of dollars, aided by a flood of