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

Company

March 22

Weekly Gain

Acadia Pharmaceuticals (NASDAQ:ACAD)

$7.57

21%

Nordic American Tankers (NYSE:NAT)

$11.15

18%

SUPERVALU (NYSE:SVU)

$4.95

13%

Kratos (NASDAQ:KTOS)

$5.05

12%

Shutterstock (NYSE:SSTK)

$44.48

11%

Source: Barron's.

Acadia moved higher on promising results during a late-stage clinical trial of its lead candidate. The biotech's promising Pimavanserin aims to treat psychosis in patients with Parkinson's disease.

It was a good week for floating shippers. Nordic American Tankers Limited enhanced its chances to rally by announcing that it will add a new vessel -- pushing its fleet up to 21 tankers -- by May. Nordic American Tankers points out that growing its operations will help it with future dividend increases.

SUPERVALU moved higher after completing its deal to sell some of its assets to Cerebrus Capital Management. The $3.3 billion deal for five of SUPERVALU's grocery store chains has been known for weeks, but there was always the fear that the transaction wouldn't go through.

Kratos Defense & Security Solutions powered ahead after a subsidiary introduced the industry's first satellite interference geo-location simulator.

Finally, we have Shutterstock on the move. The provider of commercial digital imagery served up a pretty picture when it introduced a new image discovery tool. Shutterstock's Spectrum indexes hexagram data to serve up search results sorted by color.

Longtime Fool contributor Rick Munarriz has no position in any stocks mentioned. The Motley Fool owns shares of SUPERVALU. Try any of our Foolish newsletter services free for 30 days. We Fools don't all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.