Buy Pairs of Similar Stocks to Build a Diverse Portfoliohttp://www.zecco.com/blogs/buyupsides_blog/Buy-Pairs-of-Similar-Stocks-to.aspxFor years I ( RAH ) have purchased stocks of two similar companies to add variety to my long-term, dividend-reinvestment portfolio. For example, I bought equal dollar amounts of Deere & Company ( DE ) and Caterpillar ( CAT ) to give me exposure toen-USZeccoServer