Yahoo investors appear to be losing faith in Marissa Mayer’s turnaround efforts Yahoo Inc’s shares fell 7.5 percent as the company’s declining revenue tempered investor confidence in CEO Marissa Mayer’s turnaround efforts, prompting several analysts to cut their price targets on the stock. Yahoo’s January 31, 2014 Channel/Game Online/industrial Power/LCD TV/LED TV/Magazine Advertisement india/Mobile Launch/Networking/News/Security/Social Media/Tablet/Telecom News/TV/Youtube Video