BOSTON (TheStreet) -- The selloff has put certain stocks on sale.

The S&P 500 Index has slumped 10% from a 19-month high in April. And Greece's debt woes helped sink U.S. stocks again yesterday after they rebounded earlier in the session. Moody's downgraded Greece's credit rating by four levels to junk status.

Investors should consider the following 10 companies. Each ranks as analysts' favorite pick within its respective sector. Euro-region pessimism presents an opportunity to bargain-hunt in U.S. markets.

10. Public Service Enterprise Group ( PEG - Get Report) is an electric and natural-gas utility in the Northeastern and Mid-Atlantic regions of the U.S.

Quarter: First-quarter profit increased 11% to $491 million, or 97 cents a share, as revenue declined 6.2%. The operating margin rose from 24% to 25%. The company has $315 million of cash and $8.2 billion of debt, equal to a debt-to-equity ratio of 0.9.

Stock: Public Service Enterprise Group has advanced 0.2% during the past year, lagging behind U.S. stock indices. It trades at a price-to-earnings ratio of 9.9 and a price-to-projected-earnings ratio of 11, 14% and 29% discounts to utility industry averages.

Consensus: Of analysts covering Public Service Enterprise Group, 15, or 83%, advise purchasing its shares and three recommend holding them. Goldman Sachs ( GS) expects the stock to gain 25% to $41. Deutsche Bank ( DB) predicts that it will hit $28.

9. WMS Industries ( WMS - Get Report) designs casino gaming machines and video lottery terminals.

Quarter: Fiscal third-quarter profit stretched 35% to $33 million, or 55 cents, as revenue climbed 9.2%. The operating margin extended from 21% to 23%. WMS has $161 million of cash, converting to a quick ratio of 3.7, and $9.9 million of debt.

Stock: WMS has soared 59% during the past 12 months, outpacing U.S. benchmarks by a wide margin. Still, it sells for a price-to-projected-earnings ratio of 20 and a price-to-book ratio of 3.3, reflecting 34% and 43% discounts to its leisure peer averages.

Consensus: Of researchers following WMS, 14, or 88%, advocate purchasing its shares and two suggest holding them. Stifel Financial ( SF) and Macquarie ( MQBKY) forecast that the stock will rise 31% to $60. Sterne, Agee & Leach offers a $59 target.

8. Virgin Media ( VMED) provides entertainment and communications services in the U.K.

Quarter: Virgin Media's first-quarter loss widened to $244 million, or 74 cents, from $220 million, or 59 cents, a year earlier. The operating margin rose from 2.3% to 7.9%. Virgin Media has $9.3 billion of debt, translating to a debt-to-equity ratio of 4.6.

Stock: Virgin Media has doubled during the past year, beating U.S. indices. It trades at a price-to-sales ratio of 0.9 and a price-to-cash-flow ratio of 3.7, 54% and 75% discounts to industry averages. It's expensive based on projected earnings and book value.

Consensus: Of firms evaluating Virgin Media, 17, or 89%, rate its stock "buy" and two rank it "hold." Goldman Sachs offers a target of $26.10, leaving a potential return of 49%. Evolution Securities forecasts that the stock will hit $25.80.

7. McDermott International ( MDR - Get Report) is an engineering and construction company, focusing on the oil-and-gas and power-generation markets.

Quarter: First-quarter profit decreased 23% to $60 million, or 26 cents, as revenue fell 21%. The operating margin narrowed from 8.3% to 6.7%. Its balance sheet stores $872 million of cash, equaling a quick ratio of 0.9, and $69 million of long-term debt.

Stock: McDermott has remained flat during the past year, trailing U.S. benchmarks. It sells for a price-to-projected-earnings ratio of 9.9 and a price-to-sales ratio of 0.9, 31% and 24% discounts to peer averages. It's expensive based on cash flow.

Consensus: Of analysts covering McDermott, 19, or 90%, advise purchasing its shares and two recommend holding them. Citigroup ( C) predicts that the stock will appreciate 63% to $38. Pritchard Capital values the shares at $35.

6. Activision Blizzard ( ATVI) designs personal computer and console games.

Quarter: First-quarter profit more than doubled to $381 million, or 30 cents, as revenue grew 33% to $1.3 billion. The operating margin jumped from 21% to 39%. Activision Blizzard holds $3.3 billion of cash, converting to a quick ratio of 2.3, and no debt.

Stock: Activision Blizzard has dropped 15% during the past 12 months, lagging U.S. indices. It trades at a PEG ratio, a measure of value relative to projected growth, of 0.1, a 90% discount to estimated fair value. It's also cheap based on book value.

Consensus: Of researchers following Activision Blizzard, 27, or 93%, advocate purchasing its shares and two say to hold them. Wedbush Securities, RBC ( RY) and FBR Capital Markets ( FBCM) offer a target of $16, leaving a potential return of 45%.

5. Thermo Fisher Scientific ( TMO) sells analytical instruments to life-sciences companies.

Quarter: First-quarter profit soared 56% to $232 million, or 55 cents, as revenue grew 19%. The operating margin extended from 9% to 12%. Thermo Fisher has $1.4 billion of cash and $2.1 billion of debt, equaling a debt-to-equity ratio of 0.1.

Stock: Thermo Fisher has returned 26% during the past year, more than U.S. benchmarks. It sells for a PEG ratio of 0.3, a 70% discount to estimated fair value. Its price-to-projected-earnings ratio of 13 reflects a 40% discount to the industry average.

Consensus: Of firms evaluating Thermo Fisher Scientific, 14, or 93%, rate its stock "buy" and one ranks it "hold." Thomas Weisel ( TWPG) predicts that the stock will gain 26% to $66. UBS ( UBS) offers a target of $64, leaving 22% of potential upside.

4. Steel Dynamics ( STLD) makes steel, including flat-rolled and light structural.

Quarter: Steel Dynamics swung to a first-quarter profit of $65 million, or 29 cents, from a loss of $88 million, or 48 cents, a year earlier. The operating margin turned positive. Steel Dynamics has $2.4 billion of debt, equal to a debt-to-equity ratio of 1.2.

Stock: Steel Dynamics has dropped 11% during the past 12 months, underperforming U.S. indices. It trades at a price-to-projected-earnings ratio of 7.3 and a price-to-book ratio of 1.5, indicating 52% and 50% discounts to metals peer averages.

Consensus: Of analysts covering Steel Dynamics, 11, or 92%, advise purchasing its shares and one recommends holding them. Dahlman Rose forecasts that the stock will rise 80% to $26. KeyBank ( KEY) and UBS ( UBS) expect it to rise to $23.

3. Petrohawk Energy ( HK - Get Report) explores for oil and natural gas in the U.S.

Quarter: Petrohawk swung to a first-quarter profit of $156 million, or 52 cents, from a loss of $1 billion, or $3.87, a year earlier. Revenue surged 67% to $440 million. Petrohawk holds $3 billion of debt, converting to a debt-to-equity ratio of 0.9.

Stock: Petrohawk has fallen 15% during the past year, lagging behind U.S. benchmarks. It sells for a price-to-projected-earnings ratio of 19, a 44% premium to its peer average. But its book value multiple of 1.8 indicates a discount of 47%.

Consensus: Of researchers following Petrohawk, 25, or 86%, advocate purchasing its shares and four recommend holding them. Tudor Pickering and JPMorgan ( JPM) expect the stock to more than double, with targets of $47 and $43, respectively.

2. MasterCard ( MA - Get Report) is a credit card company, offering transaction-processing services.

Quarter: First-quarter profit expanded 24% to $455 million, or $3.46, as revenue grew 13%. The operating margin extended from 49% to 54%. The balance sheet houses $3.1 billion of cash, converting to a quick ratio of 1.4, and $21 million of debt.

Stock: MasterCard has appreciated 23% during the past 12 months, slightly outpacing the Nasdaq Composite. It trades at a price-to-projected-earnings ratio of 13, a 21% discount to its peer average. It's expensive based on book value and cash flow.

Consensus: Of firms assessing MasterCard, 35, or 92%, rate its stock "buy," two rate it "hold" and one ranks it "sell." Piper Jaffray ( PJC) offers a target of $341, leaving 67% of potential upside. Credit Agricole expects the stock to hit $335.

1. TriQuint Semiconductor ( TQNT) sells high-tech materials to communications companies.

Quarter: TriQuint swung to a first-quarter profit of $14 million, or 9 cents, from a loss of $16 million, or 11 cents, a year earlier. Revenue surged 52% to $181 million. The operating margin turned positive. TriQuint has $158 million of cash and no debt.

Stock: TriQuint has returned 15% during the past year, trailing major indices by a slight margin. It sells for a PEG ratio of 0.1, a 90% discount to estimated fair value. Its forward earnings multiple of 8.7 reflects a 36% discount to the industry average.

Consensus: Of analysts covering TriQuint, 10, or 91%, advise purchasing its shares and one counsels holding them. Stifel Financial ( SF) values TriQuint at $10.50 a share, leaving a potential return of 59%. Raymond James ( RJF) offers a target of $10.

-- Reported by Jake Lynch in Boston.

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