Building Wealth: Best Moves If You're 35 To 44

( FM ) 29. Ride the shale boom. Oil and gas production from shale deposits is "the most important energy innovation of the 21st century," says Mark Luschini at Janney Montgomery Scott. That's no secret, so look beyond traditional energy giants. Halliburto ( HAL , Fortune 500 )is the largest provider of hydraulic fracturing services; railroads such as CS ( CSX , Fortune 500 )transport the oil after extraction.