Yamaha has reported its 2010 business results last week, and despite announcing a small profit, investors lost faith in the company. Yamaha Motor share price plunged 10.55% to 1,525 yesterday at the Tokyo stock exhange. For 2011, the company is expecting a rise of 9.3% in net profit to 20 billion yen and a 3.3% rise in operating profit to 53 billion yen, but investors were still disappointed. Although sales have been strong in Asia, weak sales numbers in the US and Europe have caused Yamaha’s concern.