CNN
Lyft, Slack, and Levi Strauss could all debut on the stock market later this month and a parade of so-called unicorns, privately held companies valued at more than $1 billion, are expected to go public this year. They include Uber, Pinterest, Peloton, AirBnb, and WeWork. The busy IPO market could cause problems for some of the companies expected to debut later this year.