Calumet Specialty Product Partners LP (CLMT) has been named as a Top 10 dividend paying energy stock, according to Dividend Channel, which published its weekly ''DividendRank'' report. The report noted that among energy companies, CLMT shares displayed both attractive valuation metrics and strong profitability metrics. For example, the recent CLMT share price of $31.45 represents a price-to-book ratio of 1.7 and an annual dividend yield of 8.72% — by comparison, the average energy stock in Dividend Channel's coverage universe yields 4.7% and trades at a price-to-book ratio of 2.7. The report also cited the strong quarterly dividend history at Calumet Specialty Product Partners LP, and favorable long-term multi-year growth rates in key fundamental data points.The report stated, '' Dividend investors approaching investing from a value standpoint are generally most interested in researching the strongest most profitable companies, that also happen to be trading at an attractive valuation. That's what we aim to find using our proprietary DividendRank formula, which ranks the coverage universe based upon our various criteria for both profitability and valuation, to generate a list of the top most 'interesting' stocks, meant for investors as a source of ideas that merit further research.'' The annualized dividend paid by Calumet Specialty Product Partners LP is $2.74/share, currently paid in quarterly installments, and its most recent dividend ex-date was on 10/31/2013. Below is a long-term dividend history chart for CLMT, which Dividend Channel stressed as being of key importance. Indeed, studying a company's past dividend history can be of good help in judging whether the most recent dividend is likely to continue.