Solarfun Power Holdings, based in China, did much better, gaining 23.7%, though without any material news.

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The venture-capital backed company has signed deals this year with JA Solar, Solarfun Power Holdings and Yingli.

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Peter Xie, Solarfun's president, said he was very pleased with the company's performance.

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Solarfun Power Holdings let the sun shine in during its first quarter, which saw big increases in sales and profits, warming the broader solar industry.

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First Solar or a Chinese player like JA Solar or Solarfun?

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Solarfun Power Holdings ( SOLF - news - people ) has emerged as one of the best performing stocks within the solar sector.

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Wednesday's report follows Solarfun's forecast earlier this month for strong demand in the second half of this year and said it plans to increase its production capacity.

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Wall Street was also pleased with the Solarfun Power Holdings outlook, which includes total module shipments in the second quarter to range between 160 megawatts and 170 megawatts, and between 600 megwatts and 650 megawatts for the full year.

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