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New York, NY -- (SBWIRE) -- 02/15/2013 -- issues special report on the top market gainers – Constellation Brands, Inc. (NYSE:STZ), Alpha Natural Resources, Inc. (NYSE:ANR), Groupon Inc (NASDAQ:GRPN) and SunPower Corporation (NASDAQ:SPWR).

Constellation Brands, Inc. (NYSE:STZ) shares soared on investor expectations that a $20.1 billion tie-up between beer giants Anheuser-Bush InBev and Grupo Modelo will gain authorization from U.S. regulators after the companies revised deal terms.

Where STZ is Headed Exactly? Find out in This Trend Analysis Reports

In the last trading session, Constellation Brands, Inc. (NYSE:STZ) reported the gain of +37.23% and closed at $43.75 with the total traded volume of 50.30 million shares more than the average volume of 5.07 million. Stock hit a new 52 weeks high price of $44.18 and its 52 weeks low price was $18.50.

Alpha Natural Resources, Inc. (NYSE:ANR) reported fourth quarter results with narrow loss and beat Wall Street’s expectations. Alpha Natural lost $127.6 million, or 58 cents per share, for the period ended Dec. 31. That compares with a loss of $792.9 million, or $3.62 per share, a year earlier. It lost dropped 19 cents per share while Analysts projected a loss of 52 cents per share.

Can ANR Show a Strong Recovery? Find out in This Research Report

In the last trading session, Alpha Natural Resources, Inc. (NYSE:ANR) surged +13.90% to close at $9.67 and its total traded volume was 39.61 million shares more than the average volume of 14.63 million. ANR has market cap of 2.13 billion and its beta value stands at 1.69 times.

Groupon Inc (NASDAQ:GRPN) shares are moving up today, after analysts at Sterne Agee declared that they were upgrading the stock. The report issued to investors, shows that this is an “out-of-consensus upgrade,” grounded on a long-term view. They highlight that their upgrade of the stock is not based on the company’s upcoming earnings report.

Should GRPN a Buy or Sell Now? Find Out Here

Groupon Inc (NASDAQ:GRPN) moved up +6.73% and closed at $5.95 in the last trading session with the total traded volume of 28.29 million shares. GRPN has outstanding shares of 655.72 with the total market cap of 3.90 billion.

SunPower Corporation (NASDAQ:SPWR) jumped +22.40% with the closing price of $1.213. The overall volume in the last trading session was 15.02 million shares. Its fifty two week range was $3.71-$12.45. The total market capitalization remained $1.95 billion.

What SPWR’s Charts Are Signaling for Traders? Find Out Here

SPWR is ahead its 52 week low with 226.95% and its last month price volatility remained 13.93%. Its beta coefficient was 2.07 with a target price of $6.58. In its share capital SPWR has 161.08 million outstanding shares while 62.52 million shares have been floated in market. SPWR has insider ownership of 0.03% with its institutional ownership remained 20.25%.

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