Wheezing unicorns may get a breath of fresh air from initial public offerings.
Unicorns, those technology start-ups like the cloud computing firms Twilio and Nutanix that have a valuation of $1 billion or more, risk running short of cash as venture capital dries up. The recent revival of I.P.O.s could offer them new hope. Company valuations may drop, but that beats the alternative of a suddenly thinning herd.
