Top 10 Most Profitable Mid-Cap Stocks: AINV, SEP, BVN, ALXN, RNR, MFA, EPB, SLW, CQP, CIT (Aug 04, 2010)

Apollo Investment Corp. (NASDAQ:AINV) is the 1st most profitable stock in this segment of the market. Its net profit margin was 77.38% for the last 12 months. Its operating profit margin was 58.61% for the same period. Spectra Energy Partners, LP (NYSE:SEP) is the 2nd most profitable stock in this segment of the market. Its net profit margin was 75.59% for the last 12 months. Its operating profit margin was 47.37% for the same period. Compania de Minas Buenaventura SA (ADR) (NYSE:BVN) is the 3rd most profitable stock in this segment of the market. Its net profit margin was 75.47% for the last 12 months. Its operating profit margin was 30.37% for the same period. Alexion Pharmaceuticals, Inc. (NASDAQ:ALXN) is the 4th most profitable stock in this segment of the market. Its net profit margin was 67.13% for the last 12 months. Its operating profit margin was 24.84% for the same period. RenaissanceRe Holdings Ltd. (NYSE:RNR)is the 5th most profitable stock in this segment of the market. Its net profit margin was 63.29% for the last 12 months. Its operating profit margin was 63.73% for the same period.

MFA Mortgage Investments (NYSE:MFA) is the 6th most profitable stock in this segment of the market. Its net profit margin was 62.47% for the last 12 months. Its operating profit margin was 47.93% for the same period. El Paso Pipeline Partners, L.P. (NYSE:EPB) is the 7th most profitable stock in this segment of the market. Its net profit margin was 56.41% for the last 12 months. Its operating profit margin was 56.67% for the same period. Silver Wheaton Corp. (USA) (NYSE:SLW) is the 8th most profitable stock in this segment of the market. Its net profit margin was 51.26% for the last 12 months. Its operating profit margin was 51.26% for the same period. Cheniere Energy Partners, L.P. (AMEX:CQP) is the 9th most profitable stock in this segment of the market. Its net profit margin was 47.86% for the last 12 months. Its operating profit margin was 79.64% for the same period. CIT Group Inc. (NYSE:CIT) is the 10th most profitable stock in this segment of the market. Its net profit margin was 46.41% for the last 12 months. Its operating profit margin was 45.65% for the same period.