"Shares of Red Hat Inc., surged 40 percent to levels analysts
called "nosebleed territory" Thursday, giving the distributor of
the Linux operating system a market capitalization of nearly $5
billion a day after its debut."
"These levels are nosebleed territory and the stock does not
belong at these levels," said David Menlow of the IPO Financial
Network in Millburn, N.J. "It's totally unsustainable."