DuPont, Celladon, Deutsche Bank, Mylan, ImmunoGen and Akorn are big market movers

IndustriesAssociated Press

Stocks that moved substantially or traded heavily Monday on the New York Stock Exchange and the Nasdaq Stock Market:

NYSE

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DuPont Co., up $3.29 to $74.81

Institutional Shareholder Services said investor Nelson Peltz, who is seeking to break up the chemical maker, should be given seats on its board.

Deutsche Bank AG, down $1.65 to $32.61

The bank is reorganizing through branch spinoffs, office closings and by cutting its investment banking division.

Mercury General Corp., down $1.03 to $57.27

The auto insurance company reported a drop in first-quarter net income and the results fell short of Wall Street forecasts.

Nasdaq

Mylan NV, down $4.34 to $71.72

The drug developer rejected rival Teva Pharmaceutical Industries' $40.1 billion buyout offer, saying it undervalued the company.

Celladon Corp., down $11.04 to $2.64

The biotechnology company's potential heart failure treatment Mydicar failed to meet key goals in a pivotal clinical trial.

Applied Materials Inc., down $1.83 to $19.97

The semiconductor company called off its $9.4 billion buyout of Tokyo Electron because of regulators' antitrust concerns.

ImmunoGen Inc., down $1.10 to $8.86

The cancer drugmaker suffered two setbacks to its drug development pipeline.

Akorn Inc., down $12.14 to $43.10

The drug developer will restate previous financial statements because it overstated certain amounts.