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.

Amicus took off on upbeat clinical trials data. The fledgling biotech revealed positive preliminary results from all four dose cohorts in a phase 2 study for its pharmacological chaperone drug that's co-administered with enzyme replacement therapy for Pompe disease.

Herbalife continues to bounce back after a hard-hitting bearish attack from Pershing Square Capital Management's Bill Ackman late last year. Ackman's gone as far as to call Herbalife a pyramid scheme, but clearly some investors feel that last month's sell-off was overdone.

Vringo was one of the prior week's biggest losers, shedding 13% of its value. Last week, the patent-rich video ringtone maker made it all back -- and then some. Vringo's patent infringement lawsuit against Google (GOOGL -2.41%) took a positive turn when Big G asked the court to postpone a ruling, suggesting to some that the two sides may be working on a settlement.

SUPERVALU had a lousy 2012, losing nearly 70% of its value after suspending its dividend, unloading stores, and putting itself up for sale. The stock is off to a better start in 2013 after the country's third-largest supermarket operator received interest from Cerberus to acquire some of its assets.

Finally, we have MGIC, with a rare repeat performance on this list. The mortgage insurer posted a double-digit percentage pop two weeks ago after the S&P/Case-Shiller index of property values showed its strongest increase in more than two years. The mortgage insurer moved even higher this past week as sentiment on the firming of home prices continues to improve. Higher property values translates into less risk for MGIC as an insurer in case a mortgage defaults.

More winners for you
It was a great week for these five stocks, and now it's time to see which stocks will lead the way in the future.