NEW YORK ( TheStreet) -- Sunoco ( SUN) was the best-performing stock in the S&P 500 on Monday morning. The S&P was falling 4.92 points, or 0.35%, to 1,398.44.
Shares of Sunoco rose 20.07% Monday to $49.12. The petroleum refiner is being acquired by Energy Transfer Partners ( ETP) for for $5.3 billion, or $50.13 a share. Sunoco's stock hit a 52-week high Monday of $49.50. The stock's 52-week low of $22.76 was set on Aug. 9. Sunoco trades at an estimated price-to-earnings ratio for next year of 29.56 times; the average for energy exploration and production companies is 15.5. For comparison, Denbury Resources ( DNR) has a lower forward P/E of 10.68. Five of the 11 analysts who cover Sunoco rated it hold. Four analysts gave the stock a buy rating and two rated it sell. The stock has risen 19.7% year to date. -- Written by Alexandra Zendrian >To contact the writer of this article, click here: Alexandra Zendrian >To submit a news tip, send an email to: firstname.lastname@example.org. >To follow the writer on Twitter, go to Alexandra Zendrian.