NEW YORK (AP) -- Stocks that moved substantially or traded heavily Monday:
Akorn Inc., up $2.73 to $32.50
The generic drugmaker continued to climb after it confirmed it's talking to Germany's Fresenius Kabi about a potential sale.
Straight Path Communications Inc., up $55.16 to $91.64
The wireless spectrum license company agreed to be bought by AT&T for $95.63 a share in stock, or $1.25 billion.
Swift Transportation Inc., up $4.75 to $24.77
The trucking company agreed to buy competitor Knight Transportation in an all-stock deal.
Intrawest Holdings Inc., down $1.70 to $23.60
The ski resort company agreed to be taken private in a deal worth $23.75 a share, or $945 million.
Rent-A-Center Inc., up 69 cents to $10.29
The lease-to-own furniture and appliance company shook up its business and said founder Mark Speese is returning as CEO.
Mondelez International Inc., up 22 cents to $44.40
The Wall Street Journal said the Oreo cookie maker could replace longtime CEO Irene Rosenfeld.
BHP Billiton Ltd., up $1.29 to $38.26
A firm linked to activist investor Paul Singer disclosed a stake in the company and pushed for changes to its structure.
Noble Energy Inc., up 73 cents to $35.31
Energy company stocks rose as the price of oil continued its recent recovery.