ZURICH, Feb 18 (Reuters) - Sonova Holding AG:
* Shares rise 3.2 percent at the open after group raises guidance
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* Shares rise 3.2 percent at the open after group raises guidance
((Zurich Newsroom, zurich.newsroom@reuters.com, +41 58 306 7336))
(For more information, click on) COPYRIGHT Copyright Thomson Reuters 2010. All rights reserved. The copying, republication or redistribution of Reuters News Content, including by framing or similar means, is expressly prohibited without the prior written consent of Thomson Reuters.