Five months into the year and Morgan Stanley's global investment banking division has had a good start. The firm is ranked number one in announced MA deals for 2009 year-to-date with a 43.1% market share, according to data from Thomson Reuters. And last week the bank moved ahead of J.P. Morgan as the top global arranger of equity capital markets deals on the back of a slew of follow-ons in the US. The bank also led the $858 million initial public offering for Mead Johnson, the only US IPO in the first quarter and the first since November 2008. The firm is also among the top three for M...