Wall Street's biggest bull and what he's buying

Traders work on the floor of the New York Stock Exchange.
Brendan McDermid | Reuters

Wall Street market strategists, on average, believe stocks could rise almost 7 percent by year-end, according to a CNBC survey released Thursday.

But one strategist, Thomas Lee, says the S&P 500 may in fact double that consensus return.

His uber-bullish sentiment is based on the belief that even after a six-year bull market, the U.S. economy is only starting to get going now.

And after studying past bull markets, the strategist puts the probability of this one reaching a seventh year at 70 percent.

Here's how he says to trade his bright outlook.