Internet investors, take heart. Some deals are going to have very profitable exits.

The value of 11 high-profile Internet companies that are privately held has surged 54 percent in June, a new report from Nyppex finds.

According to Bloomberg, Nyppex says the value of Facebook alone has soared to $41.2 billion, up 56 percent. Groupon is worth $4.8 billion, up 400 percent, and Twitter is worth $3.71 billion, up more than 100 percent.

Also tracked are Yelp, Zynga Game Network, LinkedIn, RockYou, Linden Research, Digg, Loopt and Eventful.

For the full Bloomberg report, read here.

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