Omnicom Profit Beats Wall Street View  NEW YORK (Reuters) - Omnicom Group &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=OMC.N target=/stocks/quickinfo/fullquote"&gt;OMC.N&lt;/A&gt; on Tuesday  reported a quarterly profit that outpaced Wall Street  expectations as the No. 1 advertising group added high-profile  accounts and benefited from increased global ad spending.