TRW Automotive Holdings ( TRW) was up 34%, or $1.13 to $4.50 among stocks making the biggest percentage moves Thursday. JPMorgan analyst Himanshu Patel upgraded TRW to neutral from underweight in a note to investors on Thursday. He said European programs promoting vehicle scrapping and better-than-expected U.S. auto sales in March are positive signs for the company. Tenneco ( TEN), a maker of automotive emission-control products, was up 39 cents, or 24% to $2.02. Century Aluminum ( CENX) was up 27%, or 62 cents to $2.92. Delta Petroleum ( DPTR) was higher by 40%, or 49 cents to $1.71 on volume of more than 3 million shares. Amylin Pharmaceuticals ( AMLN) shares were down $1.58, or 13% to $10.47 on volume of almost 9 million, about four times its average. The FDA on Wednesday recommended approval of Bristol-Myers Squibb ( BMY) and AstraZeneca's rival oral diabetes drug Onglyza, or saxagliptin. The ProShares UltraShort Real Estate Fund ( SRS), an exchange-traded fund that bets on a decline in real estate, or for a 200% inverse performance compared to the Dow Jones Real Estate index, was down $8.35, or 15.5%, to $45.43. More than 31 million shares were trading, about 10 million more than average.