Stocks to Watch: FB, MRK, AAPL & More

Take a look at some of Friday's morning movers:

Facebook - The social-networking giant posted a slowdown in revenue growth and gave no guidance, causing investors to worry over the future growth. Shares plunged to an all-time low.

Merck - The drugmaker posted quarterly earnings that topped estimates despite the negative impact of the stronger dollar, with solid sales growth from its vaccines and treatments for diabetes and HIV.

Apple - The tech giant agreed to acquire fingerprint-sensor chipmaker AuthenTec for $356 million.

JPMorgan - The banking giant announced some management changes this morning. Among the key changes, the company named Jes Stanley as chairman of its corporate and investment bank. Mike Cavanagh and Daniel Pinto were named co-CEOs of the division. In addition, Matt Zames was named co-operating chief of the entire company.

Barclays - The financial firm topped forecast estimates and said performance in July was better than the previous year. But the company revealed a new regulatory probe and more U.S. lawsuits, making it harder for the British lender to repair the damage to its reputation caused by its role in the interest rate-rigging scandal shaking banks.

DRHorton - The homebuilder reported a gain in earnings and said new orders jumped for the fourth-straight quarter.

Newmont Mining - The gold mining company announced its earnings tumbled 30 percent on lower gold and copper output. In addition, the company slashed its full-year production outlook.

Pilgrim's Pride - The chicken producer posted better-than-expected earnings as the company continued to reduce its debt. Meanwhile, the drought in the Midwest grain belt sparked a price rally, sending corn and soybean prices to record highs last week, raising worries over global food prices.

Coventry Health Care - The insurance company topped earnings estimates, thanks to an increase in members in its Medicare plans for seniors.

Legg Mason - The money manager swung to a quarterly loss due to costs from recapitalization and new products.

—By CNBC’s JeeYeon Park (Follow JeeYeon on Twitter: @JeeYeonParkCNBC)

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