Used car retailer CarMax Inc.'s shares rose 3.5% in premarket trade Friday, after the company topped earnings estimates for its fiscal first quarter. The company said it had net income of $238.7 million, or $1.33 a share, in the quarter to May 31, up from $211.7 million, or $1.13 a share, in the year-earlier period. Sales rose to $4.79 billion from $4.54 billion. The FactSet consensus was for EPS of $1.24 and sales of $4.61 billion. Same-store sales fell 2.3%, pressured by lower store traffic and a tough comparison with the strong prior-year performance, the company said in a statement. "While our comparable store unit sales performance improved significantly from the February 2018 quarter, we believe macro pricing factors still had some effect on our first quarter sales," Chief Executive Bill Nash said in a statement. Shares have gained 10.8% in 2018, while the S&P 500 has gained 2.9%.