NetScout, Alco Stores, Atlas and AES are big market movers

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

NYSE

Atlas Energy LP, up $4.84 to $37.25

Targa Resources is buying the energy company and a pipeline company in a deal valued at nearly $6 billion, creating a big energy transportation company.

CSX Corp., up $1.76 to $31.70

The Wall Street Journal reported that the rail company rejected a possible merger with rival Canadian Pacific Railway.

Statoil ASA, up 2 cents to $24.37

The Norwegian energy company sold its stake in a gas project in Azerbaijan to Malaysian company Petronas for $2.25 billion.

J.C. Penney Co., down 3 cents to $7.09

The department store operator named Home Depot executive Marvin Ellison as its next CEO. Ellison will succeed Mike Ullman next year.

The AES Corp., down 11 cents to $13.14

The Virginia utility company is selling its stake in a Turkish joint venture for $125 million as it retreats from overseas markets.

Nasdaq

Outerwall Inc., up $1.91 to $53.28

An analyst at B. Riley upgraded his investment rating on shares of the operator of DVD rental kiosk Redbox to "Neutral" from "Sell."

Alco Stores Inc., down $1.21 to 44 cents

The small-town discount retailer filed for Chapter 11 bankruptcy protection, but plans to stay in business while it reorganizes.

NetScout Systems Inc., down $2.75 to $39.16

The seller of products that gauge network performance said it is buying Danaher's communications business in a deal worth about $2.6 billion.