Higher close after GDP revised upward

An upward revision of the nation's GDP lifted the markets to a higher close with the Dow climbing 44 to 17,873. Nasdaq gained 31 points to 4,933.

On the upside

SunOpta (Nasdaq: STKL) will evaluate Tourbillon Capital Partners' suggestion that the company sell itself.

ChemoCentryx (Nasdaq: CCXI) selected Ernst & Young as its independent registered public accounting firm and elected to directors to its board.

Bargain hunters lifted shares of Bristow Group (NYSE: BRS).

On the downside

Investors locked in profits on Flexion Therapeutics (Nasdaq: FLXN).

Shares of Cliffs Natural Resources (NYSE: CLF) dropped after Axiom Capital said iron ore supplies are expected to continue growing.

Falling gold prices weighed down shares of McEwen Mining (NYSE: MUX).

In the broad market, advancing issued outpaced decliners by a margin of more than 2 to 1 on both the NYSE and on Nasdaq. The broader S&P 500 climbed 8 points to 2,099. Bitcoin soared $19 to $469.