Solarworld AG, Germany's third-largest solar company, was rated ``underperform'' in new coverage at Credit Suisse Group AG, which cited risks to margins.
``Competition from Asia, combined with tougher legislation, will likely lead to more aggressive pricing and margin pressure,'' London-based analysts led by Adrien Bommelaer wrote in a note to clients today.
Credit Suisse set a share-price estimate of 20 euros. The stock declined 1.10 euros, or 5.3 percent, to 19.74 euros in German trading yesterday.
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