5 of Last Week's Biggest Winners

What's better than momentum? Mo' momentum. Let's take a closer look at five of this past week's biggest scorchers.

Source: Barron's.

Let's start with Plug Power. The stock soared in the latter half of the week after an encouraging business update. Fueled by repeat business from prolific clients, Plug Power closed out its latest quarter with $32 million in orders. It sees the new quarter clocking in with sequential improvement, offering up a rosy scenario of recurring hydrogen and service revenue. 

Yingli Green Energy soared after announcing a joint venture with Shuozhou Coal Power to build solar power plants in China. Yingli led the way for what proved to be a great week for many other solar energy stocks.

Kandi Technologies Group continues to gain ground after revealing that it shipped 2,800 electric vehicles during the most recent quarter. Kandi's prominent role in a car-sharing program will continue to pay off in the near term. 

Crocs moved higher after Blackstone Group took a big stake in the casual-footwear maker. Crocs also announced that its CEO is retiring, a move that could open the door for a potential suitor to try it on for size.

Finally we have Qunar moving higher after announcing that it managed 60,000 air ticket bookings through mobile devices in a single day. The fast-growing Chinese travel portal also had encouraging metrics to offer on its hotel and taxi bookings via mobile devices.