During his time as an undergraduate at USC, he developed an award-winning business plan for a class project that would eventually grow to become Zentropy Partners, according to the Los Angeles Business Journal.
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In 1995, he founded Zentropy Partners, which grew to become the fifth-largest interactive advertising agency in the United States.
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Magnussen formed Zentropy Partners, an interactive advertising and branding company, in 1995 just prior to the dot-com boom.
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Magnussen started Hollywood-based Ripe Digital Entertainment in 2003 and closed it in 2009, after selling Zentropy to Interpublic Group for $50 million in 1999, according to the Wall Street Journal.
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