Mutual funds are helping to pump up several segments of the energy sector. IBD’s Oil & Gas-Transportation/Pipeline industry group is ranked No. 4 among 197. That’s up from No. 9 one week ago and No. 43 six weeks ago. It’s based on six months of stock market price performance. The Oil & Gas-U.S. Exploration & Production group is No. 7, up from 18 and 55. Oil & Gas-Refining/Marketing is No. 8, up from 13 and 51.