Long frustrated about the low market valuation of Nasdaq OMX Group, the exchange operator's management is debating ideas ranging from diversification to going private or eventually splitting up the company.
Asian shares fell on Tuesday as investors turned cautious after the new year's rallies, with corporate earnings season for the last quarter of 2012 looming and the European Central Bank's policy meeting due later in the week.
Asian stocks ended higher on Tuesday in a relatively quiet trading session as volume remained low with the majority of financial markets shut for Christmas but Chinese markets rebounded since early December to hit a 5-month high.