A general view of Gunvor Petroleum or Rozenburg refinery in Rotterdam, Netherlands. Europe’s largest port covers 105 square kilometers (41 square miles) and stretches over a distance of 40 kilometers (25 miles).
Dean Mouhtaropoulos | Getty Images News | Getty Images
The energy sector has been the biggest winner this year by far amid an economic recovery and a rebound in oil prices, and hedge funds' top picked in the space are leading the comeback rally.