c.e.o. carol bartz had been fired. the board's decision to give bartz the boot was unexpected. some analysts say the move makes the web portal a potential takeover target. in 2008, yahoo rejected a microsoft buyout offer for $33 per share. yahoo's share price is less than half that tonight. yahoo's chief financial officer, tim morse, was named interim c.e.o. another management shakeup, this one at the country's biggest bank-- bank of america. it's the latest move by b. of a. as it aims to shore up investor and customer confidence. the executive shuhung comes after warren buffett invested billions in b. of a. and during efforts to settle lawsuits over bad mortgages. righting the ship. it's a task bank of america c.e.o. brian moynihan was tapped to do as 2009 came to a close. at that time, the bank was taking heat for its handling of the financial crisis and its acquisitions of one-time mortgage giant countrywide financial and legendary investment banking house merrill lynch. the countrywide buy-out continues to haunt b. of a. it was sued last week by a federal housing regulator

c.e.o. carol bartz. it added another 6% this time. the company has increased its market value by almost $2 billion since letting bartz go. this is the past 90 sessions. here's the past year for yahoo. it is back to where it was trading last september. 12 months worth of trading. activist investor daniel loeb announced a 5% stake in the company. he's calling for a reorganization of the board of directors. we will want to watch semiconductor stocks tomorrow. after the close tonight, semiconductor maker texas instruments cut its third quarter outlook, blaming what the company called "broadly lower demand across a wide range of products." disappointing forecast here. let's take a look at the semiconductor sector exchange- traded fund. texas instruments makes up 20% of this fund. intel the other big chunk. chip makers have had a tough go since may as firms have reported disappointing computer sales thanks to the growing tablet market. clearly a sector to watch. finally, a deal. medical equipment services firm perkin elmer is spending $600