Markets slip as growth slows in China

Slowing growth in China weighed the markets down during the midday with the Dow slipping 24 points to 17,191. Nasdaq lost 8 points to 4,878.

On the upside

Shares of Keryx Biopharmaceuticals (Nasdaq: KERX) extended its gains.

Northwest Biotherapeutics (Nasdaq: NWBO) issued a statement saying that it was unaware of any reason for the sharp drop in its stock price on Friday.

Bargain hunters lifted shares of Zafgen (Nasdaq: ZFGN).

On the downside

Great Lakes Dredge & Dock (Nasdaq: GLDD) withdrew its full year earnings outlook and initiated a review of strategic alternatives to increase shareholder value.

Investors locked in profits on PTC Therapeutics (Nasdaq: PTCT).

A beta-thalassemia patient treated with the first generation version of Bluebird Bio's (Nasdaq: BLUE) gene therapy suffered a relapse.

In the broad market, declining issues outpaced advancers by a margin of more than 10 to 9 on the NYSE while advancers edged out decliners by more than 5 to 4 on Nasdaq. The broader S&P 500 lost 2 points to 2,030. Bitcoin added $2 to $262.