Lowe's Forecast Hammers Stock  ATLANTA (Reuters) - Home improvement retailer Lowe's Cos.  &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=LOW.N target=/stocks/quickinfo/fullquote"&gt;LOW.N&lt;/A&gt; on Monday reported a 15 percent rise in third-quarter  profit, aided by its expansion to New York and other big U.S.  markets, but its stock slumped on a disappointing outlook.