The companies whose shares are actively trading in Friday's morning session include Bank of Ireland, Alexander & Baldwin, NYSE Euronext, SRA International, Logitech International, Office Depot, Ascent Solar and Omeros.

Gainers

ADRs of Bank of Ireland (NYSE:IRE) were up 23 percent to $2.15 after Ireland said it would restructure its banking sector. For the past 52-weeks, ADRs were trading in the range of $1.38 to $10.57.

Shares of Alexander & Baldwin, Inc. (NYSE: ALEX) were up 17 percent to $53.45 after a regulatory filing showed that Bill Ackman's  Pershing Square has a 9.9 percent stake in the parent company Matson Navigation.

NYSE Euronext, Inc. (NYSE:NYX) shares jumped 11.34 percent to $39.16 after Nasdaq OMX (NASDAQ:NDAQ) and IntercontinentalExchange (NYSE:ICX) made a hostile bid of about $11.3 billion for the exchange operator, topping the $9.5 billion offer from Deutsche Boerse.

Shares of SRA International Inc. (NYSE:SRX) soared about 10 percent to $31.13 after it agreed to be agreed to be acquired by private equity firm Providence Equity Partners for $1.88 billion.

Losers

Shares of Omeros Corp. (NASDAQ:OMER) plummeted 33 percent to $5.34 after its knee drug failed to meet endpoints in a late -stage study.

Shares of Logitech International SA (NASDAQ:LOGI) fell about 18 percent to $14.94 after it lowered its fiscal 2011 forecast.

Shares of Ascent Solar Technologies, Inc. (NASDAQ: ASTI) plunged 17 percent to $2.37 after it announced a change in strategy and the departure of its Chief Executive. The company now plans to reduce its presence in regular rooftop solar installations, a move that may hurt its revenues.

Shares of Office Depot (NYSE:ODP) were down 16 percent to $3.90 after its announcement to restate its financial results for fiscal 2010.