Energy Winners & Losers: Sunoco

NEW YORK -- Shares of refiners were mixed on Tuesday, as oil slid to a new year-low and an analyst downgraded the entire sector.

In electronic trading on Tuesday, crude oil prices fell to a new low of $46.82. Crude prices have tumbled since mid-summer record highs, shedding more than two-thirds of its value.

Gasoline prices have fallen for the 20th week since the July 4 holiday to a new three-year low of $1.811 per gallon, according to the government's Energy Information Agency.

Shares of Holly (HOC Quote) fell 48 cents, or 2.8%, to $16.27. Sunoco (SUN Quote) shares slid 20 cents, or 0.5%, to $35. ...