Mar. 31, 2011: $17.15
Dec. 31, 2010: $20.23
Historically a darling of both resellers and investors, Cisco still hasn't rebounded on Wall Street from its inventory issues of 2010. Shares fell more than $3 on Feb. 10 to their lowest level since July 2009 after releasing financial results that included lower year-over-year profits. Shares continued to fall more than a dollar-and-a-half over the next 50 days too.