NEW YORK: Stocks that moved substantially or traded heavily on Thursday: WhiteWave Foods Co (WWAV) , up $8.80 to $56.23 The organic food maker agreed to be bought by French yogurt giant Danone in a deal worth about $10 billion. PepsiCo Inc. (PEP), up $1.57 to $107.49 The company's quarterly profit surpassed Wall Street forecasts as investors bought new drinks and snack sales grew. AVG Technologies NV (AVG), up $5.79 to $24.58 The Dutch anti-virus software company agreed to be bought by Avast Software agreed for $25 a share, or $1.3 billion. Western Digital Corp (WDC), up $2.20 to $47.66 The hard drive maker forecast stronger results for its fiscal fourth quarter after it acquired flash memory chip maker SanDisk in May. Xcel Energy Inc. (XEL), down $1.01 to $44.32 Investors sold utility and phone company stocks, which have surged this year during a hunt for safe investments. LyondellBasell Industries NV (LYB), up $1.41 to $74.52 Materials companies including chemicals makers made the biggest gains on the market Thursday. Exxon Mobil Corp (XOM), down $1.13 to $92.96 Energy companies skidded with the price of oil after U.S. stockpiles did not decrease as much as investors expected. Costco Wholesale Corp (COST), up $7.69 to $163.70 Investors were pleased with the warehouse club operator's June sales.