Stocks that moved substantially or traded heavily Wednesday on the New York Stock Exchange and the Nasdaq Stock Market:
Yelp Inc., down $8.45 to $25.06
The online business review service reported a second-quarter loss and issued a lackluster outlook.
Twitter Inc., down $5.30 to $31.24
The short-messaging service reported better-than-expected second-quarter profit, but raised concerns about audience growth.
CNH Industrial NV, down 42 cents to $8.72
The construction and agriculture machinery maker reported a steep drop in second-quarter profit, falling short of expectations.
GlaxoSmithKline PLC, up 91 cents to $42.62
The drug developer reported a drop in second-quarter profit, but beat forecasts and expects to return to earnings growth in 2016.
Cytec Industries Inc., up $15.80 to $74.19
Belgium's chemical group Solvay is buying the specialty materials and chemicals company for $5.5 billion.
Gilead Sciences Inc., up $2.64 to $115.71
The biotechnology company reported better-than-expected second-quarter profit and revenue and raised its 2015 sales forecast.
Natural Health Trends Corp., up $9.66 to $34.38
The direct selling company reported a boost in second-quarter profit, increased its dividend and announced a stock buyback plan.
Atmel Corp., down 14 cents to $8.41
The maker of microcontrollers for mobile touch screens reported worse-than-expected second-quarter profit and revenue.