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.

Sarepta Therapeutics more than doubled on favorable results for its promising cystic fibrosis drug. Young biotechs are obviously risky, but investors still warm up to the opportunity after seeing big moves like this one.

Vringo shouted "Bingo!" after a federal district court judge refused a request to throw out a patent infringement suit that the company initiated against the major search engines. The trial is set to begin next week.

Coldwater Creek shares heated up after Piper Jaffray boosted its rating on the struggling retailer from neutral to overweight. Coldwater Creek also completed a reverse stock split on Thursday.

Primero Mining rose more than 41% shortly after the market open on Friday after the junior gold miner said it had received a positive ruling from Mexican tax authorities on the way it reports silver revenues.

Mattress Firm didn't slumber even after the fast-growing bedding retailer completed a secondary offering of 4.7 million shares. The bad news is that the company isn't getting any of the money since all of the shares were sold by early investors. Given the chain's acquisition-minded ways, it could have used more money as it continues to roll up a highly fragmented sector. The good news, though, is that the offering isn't dilutive.

More winners for you
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