Despite soft a first-quarter GDP, longtime bull Tom Lee still sees room to run for the S&P 500.
"The year after high yield has a negative return year, which is 2015, the S&P's almost always up double digits," Lee said.
"I'll dismiss people who say the stock market's expensive because bull markets peak at 25 times. We're roughly 15 times forward. So, I wouldn't say it's out of the question to say the S&P's up double digits this year," he said.