Lightning Round: Too much competition in this

It's that time again! The Lightning Round bell has rung, and Jim Cramer gives his take on a few favorite audience stocks:

Achillon Pharmaceuticals: "In the Hep C market, we have learned that there is just too much competition right now with Gilead and AbbVie and I don't think anyone is going to buy that company. if they do, it won't be at a huge premium I believe."

Celladon Corp: "A pretty good spec. A lot of different compounds, but I'm willing to go for it. I know it hit a 52-week high so you've got to be careful."

Sirius XM Holdings: "I have like it for a long time, and I have continued to like it. It's a play on cars, and I think it's doing a pretty good job in the last quarter."

E L Du Pont: "My opinion on this company is that it's too high if Nelson Peltz isn't successful. And if he is successful it can go higher. It really is kind of a Peltz play right now. I do not think that Peltz will win because the stock has moved too much, but I think that what Nelson is doing is trying to get things to be as good as possible at Dupont. I think they should put him on the board."

King Digital: "They've got new games, and it's an interesting play. But if it's gaming I'm always going to go to Take-Two Interactive."

Virgin America: "Virgin is okay, but remember the pecking order. We like Southwest because it never lost money. We like Spirit Air then we like American. Those are our triad."

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Whole Foods Market: "Whole Foods is good, it's really starting to gain strength again. I really like it, they're doing a lot right and I like this level to buy Whole Foods."

Centene: "You're stock is at a 52-week high. I wish I were that stock! It's a great stock."

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