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5 of Last Week's Biggest Winners

Sunday - 5/19/2013, 1:00pm  ET

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

Company

May 17

Weekly Gain

SolarCity

$45.00

56%

E-Commerce China Dangdang

$5.71

24%

Infinera

$10.08

17%

MannKind

$5.19

17%

ACADIA Pharmaceuticals

$13.27

10%

Source: Barron's.

Let's start with SolarCity. This company is an installer of solar energy panels with a unique pricing model, allowing buyers to pay in monthly installments comparable to the rates that they'd save in electricity. It seems as if everything Elon Musk touches turns into sun-drenched gold, and SolarCity is no exception. Shares rose like the morning sun after the company lined up a $500 million financing package that will help it expand aggressively.

Dangdang moved higher on upbeat quarterly results. Revenue climbed 23% for the fast-growing Chinese e-tailer, and Dangdang's net deficit of $0.15 a share was considerably less than what analysts were expecting.

Infinera rose after the company presented at J.P. Morgan Global Technology, Media, and Telecom Conference. No, speaking at an analyst powwow isn't always a ticket to big gains. After all, there were other presenters there that weren't treated to robust moves higher. However, Infinera was able to explain its technology and show off its latest digital optical networking systems. After trading in the single digits since January of last year, the stock finally broke into the double digits.

MannKind moved higher after analysts at MLV & Co. initiated coverage with a "buy" rating. The market's been buzzing lately about the potential for MannKind's Afrezza, an inhalable insulin that, if it gains regulatory approval, would come as a welcome relief to diabetes sufferers who are tired of needle pricks.

ACADIA Pharmaceuticals moved higher after Roth Capital Partners analyst Robert Hazlett suggested that the biotech is an attractive buyout candidate. The shares remained robust even after the company priced a secondary offering in a move that's dilutive to existing stakeholders and would make a potential acquisition more expensive.

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This article was originally published as 5 of Last Week's Biggest Winnerson Fool.com

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