While many on the Street are becoming more pessimistic on the direction of the market amid a period of heightened volatility, one team of bulls expect investors who grin and bear to it reap big returns by the end of next year. 

Be Aggressive in Tech, Consumer and Financials

In an interview with CNBC's "Fast Money" on Thursday, Chris Harvey, Wells Fargo's head of equity strategy, argued that the recent sell-off has unlocked value and has created a "great opportunity" for bargain hunters. His current price target for the S&P 500 is 3,079 by the end of 2019, implying a 12 percent upside from Thursday's close.

"People act as if this was a spectator sport, not a contact sport. We want people to pick up that value," said the market watcher. 

Harvey urges investors to stomach some risk and take action on buying value stocks at a discount. He advises viewing this action as a trade, in which investors should take risk off again when the market goes back up. 

After a brutal October, in which the S&P 500 index suffered a $1.91 trillion loss, its worst month since September 2011, U.S. equities climbed higher on the first day of November. The Dow Jones Industrial Average Index, the tech-heavy Nasdaq Composite Index and the S&P 500 all traded up on Nov. 1, aided by comments from the Trump administration indicating that trade talks with China are progressing. 

As of Friday afternoon, however, the Nasdaq is down 1%, while the Dow has fallen 0.4%, and the S&P 500 is 0.7% lower. Sharp losses for tech titan Apple Inc. (AAPL), the first U.S. corporation to surpass the $1 trillion mark in August, outweighed positive news like better-than-expected employment rates and a more upbeat trade outlook. 

Moving forward, the Wells Fargo strategist tells investors to be aggressive buyers, honing in on technology, financial and consumer stocks, which have been hit the hardest by a series of sell-offs.