Last week, Cardiovascular Solutions announced its third-quarter financial results. The company reported a net loss for the quarter and doesn't expect to be profitable in the near future. But the New Brighton-based maker of medical devices to treat vascular and coronary disease did record its 11th straight quarter of revenue growth of at least 25 percent.

Leerink analyst Danielle Antalffy wrote in a research note: "CSII is proving that it has built a solid foundation for sustainable double-digit growth." She explained the success results from best-in-class devices for treating coronary and peripheral vessels and a "robust and growing body of clinical evidence."

According to Antalffy, Cardiovascular's long-term growth will depend on more vascular surgeons adopting the company's products and educating the referral ­network of doctors. Part of the loss last quarter was attributed to the planned investments into expanding its sales force.

Antalffy maintained her "outperform" rating on ­Cardiovascular Systems.

Patrick Kennedy

Polaris beating back discounting challenges from rivals

Despite facing difficult economic and currency pressures, Polaris Industries reported "impressive" earnings on April 23, according to Wedbush analyst James Hardiman. Polaris recorded earnings per share of $1.30 for the first quarter, 6 cents better per share than Hardiman had estimated.

Polaris' Japanese competitors like Honda, Yamaha and Suzuki have used the strong U.S. dollar to their advantage by employing currency-inspired discounting, and Minnesota rival Arctic Cat has been discounting its products because of high inventories.

Overall, Hardiman believes Polaris can maintain its growth edge. "We see a company whose underlying businesses continue to grow in the 20 percent range despite a great many challenges."

Hardiman has an "outperform" rating on Polaris.

Patrick Kennedy

Buffalo Wild Wings dips on earnings, but analysts remain upbeat

The stock of Buffalo Wild Wings sank 12.8 percent on Wednesday after the casual restaurant chain reported disappointing first-quarter earnings hampered by higher chicken wing costs and greater than expected labor cost increases with the addition of "guest captains" at the restaurants. First-quarter earnings were $1.52, 11 cents per share lower than analysts were expecting. Some analysts responded by lowering their earnings guidance for the rest of the year but none had issued a full downgrade by Friday.

Patrick Kennedy