Today's Winners and Losers: Navistar

Shares of Bill Barrett(BBG Quote) were among the NYSE's winners Wednesday, climbing 14% after the oil and gas producer posted first-quarter results that beat expectations.

The company's earnings jumped to $22.1 million, or 50 cents a share, from $3.1 million, or 7 cents a share, a year earlier. Revenue rose to $97.8 million from $51.9 million. Analysts polled by Thomson First Call expected earnings of 36 cents a share on revenue of $88.5 million. "We are extremely pleased with our execution in early 2006," the company said. "We had strong production growth, particularly in the Piceance and West Tavaputs areas." Shares were trading up $4.30 to $35.16.

Shares of Navistar International(NAV Quote) jumped 10% after the diesel-engine and truck maker said that fiscal 2006 earnings would top Wall Street's forecast. While Navistar didn't offer specific numerical guidance, the company's chief executive said that "given the current strength of the industry, I am confident that Navistar will outperform the Wall Street estimate." Analysts currently have an average forecast for fiscal 2006 earnings of $5.38 a share. "Our company continues to capitalize on the strength of the industry and to build on our core business through growth in less cyclical market such as the military," Navistar said. Shares were trading up $2.60 to $27.91.

Schawk(SGK Quote) sank 21% after the digital-imaging graphic-services company posted disappointing first-quarter results. The company reported earnings from continuing operations of $5.2 million, or 20 cents a share, on revenue of $133.8 million. Analysts expected earnings of 32 cents a share and revenue of $156.8 million. A year earlier, Schawk earned $5.8 million, or 23 cents a share, on revenue of $119.2 million. The company said its results were hurt by its European operations, which got off to a slow start in 2006; the loss of certain customers in its East Coast operations; and lower ad spending by its largest client. Shares were trading down $5.33 to $19.84.