Steel Dynamics ( STLD) said its second-quarter earnings nearly doubled year over year because of strong demand for its entire product portfolio. The Fort Wayne, Ind., steel manufacturer earned $96.9 million, or $1.78 a share, in the quarter, compared with $50.7 million, or $1 a share, a year ago. Profits in the latest second quarter include the results of the former Roanoke Electric Steel from April 12 forward. The quarter's earnings were reduced by about 8 cents a share from purchase accounting adjustments related to the acquisition. Analysts polled by Thomson First Call were expecting earnings of $1.55 a share. Second-quarter revenue rose 50.5% from a year ago to $821.2 million. Analysts were expecting $749.1 million. The company forecast earnings of $2.05 to $2.15 a share in the third quarter and $7.25 to $7.50 a share for the full year. Analysts were looking for $1.60 a share in the third quarter and $6.16 a share for the year. ''As a result of higher utilization rates at our facilities, we are maintaining high production rates and shipping volumes, as well as strong profit margins," the company said. ''In the near term, we see prospects for continued favorable pricing trends, moderating steel-scrap costs and strong shipping volumes leading to a very positive earnings outlook for Steel Dynamics given our continued growth prospects.'' The company's stock was trading up $1.47, or 2.4%, to $62.10 Thursday.