Top 4 Mid-Cap Stocks In The Oil & Gas Pipelines Industry With The Highest Profit Margin By: Benzinga via Benzinga May 29, 2015 at 04:25 AM EDT Below are the top mid-cap oil & gas pipelines stocks on the NYSE and the NASDAQ in terms of profit margin. The ... Read More >> Related Stocks: Eqm Midstream Partners LP QEP Resources TCP Pipelines Valero Energy Partners LP iPath Dow Jones-Goldman Sachs Crude Oil Fund