Stocks that moved substantially or traded heavily Monday on the New York Stock Exchange and the Nasdaq Stock Market:
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Burger King Worldwide Inc., up $5.29 to $32.40
The burger chain is considering a tie-up with Canada's Tim Hortons in a maneuver that could lower its U.S. tax bill substantially.
GrubHub Inc., down $3.60 to $39.16
In a filing with regulators, the online restaurant delivery service said it may sell 10 million shares.
Hovnanian Enterprises Inc., down 5 cents to $4.22
Homebuilders slid after the U.S. reported a surprise 2.4 percent decline in new-home sales in July, led by a weak Northeast region.
The Boeing Co., up 87 cents to $128.33
Aircraft leasing company BOC Aviation placed an order for 82 airplanes, worth about $8.8 billion, with the Chicago-based manufacturer.
Ann Inc., up $2.42 to $39.94
A big shareholder in the Ann Taylor chain is ratcheting up pressure to explore a sale, calling the company's shares undervalued.
InterMune Inc., up $19.05 to $72.85
The Swiss pharmaceutical company Roche will buy the U.S. drugmaker for about $8.3 billion, or $74 per share, in an all-cash deal.
CBOE Holdings Inc., up $1.99 to $53.05
Analysts with Raymond James upgraded the trading floor operator, seeing fatter profit ahead in increased trade volatility.
The Madison Square Garden Co., up $1.18 to $66.26
Shares hit another all-time high after JAT Capital Management revealed a 6.7 percent stake in the owner of the New York Knicks.