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.

Company	May 13	Weekly Gain	My Watchlist
Quantum Fuel Systems (Nasdaq: QTWW  )	$5.13	93%	Add
Vermillion (Nasdaq: VRML  )	$6.15	55%	Add
CKx (Nasdaq: CKXE  )	$5.46	27%	Add
ServiceSource (Nasdaq: SREV  )	$17.92	23%	Add
Dean Foods (NYSE: DF  )	$13.41	22%	Add

Source: Barron's.

Quantum was the market's top-performing company, nearly doubling on favorable buzz over a plug-in hybrid version of the Ford's (NYSE: F  ) popular F-150 pickup truck it introduced during this month's Alternative Clean Transportation Expo.

Vermillion shares took off after a study showed that the company's OVA1 is a more effective blood test for detecting ovarian cancer than a rival test currently being recommended.

CKx isn't going to Hollywood. It's going to the Apollo -- Apollo Global Management, that is. The entertainment company behind the global Idol franchise that birthed American Idol and other regional incarnations accepted a buyout offer at $5.50 a share. It's a far cry from the company's own privatization efforts a couple of years ago, but it's a 40% premium to the stock's six-month average. 

ServiceSource delivered better-than-expected quarterly results in its first financial report since going public two months ago. Revenue climbed 43% for the cloud-based provider of enterprise software solutions. ServiceSource also posted a small adjusted profit. Analysts were banking on a quarterly deficit.

Dairy giant Dean Foods was no meandering cow after a promising Goldman Sachs update. Goldman sees Dean's bottom-line turnaround milking earnings growth of 72% in 2012 and 24% in 2013.

It was a great week for these five stocks. Now let's see if they're up for an encore.

Which of these five stocks do you think will continue to move higher? Share your thoughts in the comment box below.