FACTBOX-S&P 500's best and worst performers for 2007

NEW YORK, Dec 31 (Reuters) - The S&P 500 .SPX finished up 3.53 percent for 2007.

The following are the year's 10 best and worst performers, ranked by percentage change.

S&P 500 Top Performers

Companies Percentage Change

National Oilwell Varco Inc (NOV.N) 140.14

Amazon.com Inc (AMZN.O) 134.77

Jacobs Engineering Group Inc (JEC.N) 134.51

Apple Inc (AAPL.O) 133.47

Memc Electronic Materials Inc (WFR.N) 126.09

Gamestop Corp (GME.N) 125.36

Consol Energy Inc (CNX.N) 122.60

Cummins Inc (CMI.N) 115.55

Monsanto Co (MON.N) 112.62

Express Scripts Inc (ESRX.O) 103.91

S&P 500 Worst Performers

E*Trade Financial Corp (ETFC.O) -84.17