Shares of Harley-Davidson Inc rose 4 percent after UBS' bullish comments on the motorcycle maker's March retail sales. Analyst Robin Farley said a warm winter boosted the March retail sales of HOG to "close to 10 percent," and better than the Street estimates. He also said the company is likely to stick with its full-year guidance when it announces its first quarter results. As investors are cheering on the UBS comments on sales data, Farley says the company may reduce the line-up of vehicles, a move that would simplify manufacturing. "Harley had added models to its line-up over time to try to appeal to buyer preferences and more outreach groups. But we continue to believe that HOG may prune some models with model year '17 launch this Aug," Farley explained. "We first flagged this outcome in Nov note that it might make sense for HOG to reduce its 40-bike model line-up, which will help reduce inventory dealers must stock and could reduce manufacturing complexity," added Farley who has a Buy rating and $57 price target on HOG stock.