What's better than momentum? Mo' momentum.

Let's take a closer look at five of this past week's biggest scorchers.

Company

June 15 Weekly Gain My Watchlist
KIT digital (Nasdaq: KITD) $4.70 50% Add
Arena Pharmaceuticals (Nasdaq: ARNA) $8.40 27% Add
Rambus (Nasdaq: RMBS) $6.09 25% Add
Dendreon (Nasdaq: DNDN) $7.76 23% Add
BroadVision (Nasdaq: BVSN) $12.37 15% Add

Source: Barron's.

KIT digital was last week's biggest winner. The online video asset manager revealed that it's in talks with several potential buyers of the company. Then again, it remains to be seen how many are still interested in KIT now that news of a potential acquisition has moved the stock 50% higher.

The Food and Drug Administration isn't likely to make a decision on Arena Pharmaceuticals' obesity drug lorcaserin until next week, but investors seem to like its chances of receiving regulatory approval.

Rambus landed some favorable analyst coverage when Sidoti & Company set a $10 price target along with its buy rating. That's not too shabby for a stock that began the week below the $5 mark.

Dendreon soared after Summer Street initiated coverage of the biotech with a buy rating. Summer Street isn't exactly a household name among analyst firms, but the ambitious $18 price target certainly got heads turning.

Enterprise portal applications specialist BroadVision moved sharply higher on Friday after investors saw the kind of premium that social collaborator Yammer received in a buyout.

More winners for you
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The Motley Fool owns shares of Dendreon. The Motley Fool has a disclosure policy. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. Try any of our Foolish newsletter services free for 30 days.

Longtime Fool contributor Rick Munarriz calls them as he sees them. He does not own shares in any of the stocks in this story. Rick is also part of the Rule Breakers newsletter research team, seeking out tomorrow's ultimate growth stocks a day early.