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Lightning Round OT: Volcano, Sina and More

Leucadia National : Cramer believes this stock, which is up a great deal, is now selling off because it is not really known what is in its portfolio. "Ignorance is not bliss," he said. Don't buy.

Volcano : The medical device group has been "incredibly hot" and has been rolling over a little, the "Mad Money" host said. He doesn't recommend buying now, but if it goes down 10 percent, pull the trigger.

Sina : Cramer told viewers last Thursday it was time to take profits on this Chinese internet company. The only Chinese stock he is currently recommending is Baidu.

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    Jim Cramer is host of CNBC's "Mad Money" and co-anchor of the 9 a.m. ET hour of CNBC's "Squawk on the Street."

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