Take a look at some of Wednesday's midday movers:

Knight Capital - Knight Capital moved to a seven-year low after a rush of high volume ripped through a handful of stocks in early trading. Several traders attributed the problem to computer generated trades through Knight Capital. CNBC reported a spokesperson for the firm was looking into the trading activity.

Energizer Holdings - The company's shares fell after the consumer products company said its revenues for the third quarter came in weaker than expected.

Forest Labs - Forest Labs moved lower after Institutional Shareholder Services said it would back two of Carl Icahn’s nominees to the company’s board. Icahn is waging a proxy fight to elect four directors to Forest’s 10-member board.

Con-way - Its shares plummeted as the trucking company posted weaker-than-expected earnings on lighter-than-expected freight volume.

BMC Software - BMC Software lost ground after its first-quarter earnings fell 43 percent, in part on soft demand.

Devon Energy - Its shares slid after the energy producer posted weak earnings on low natural gas prices.

MasterCard - MasterCard slipped despite reporting a 15 percent in quarterly profits, however its revenue came in below expectations.

AGN News & Analysis

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