Here are the world's top 10 start-ups

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The votes—or valuations—are in. Uber, the private-car smartphone platform, is the world's most valuable start-up as of this month, according to data from The Wall Street Journal/Dow Jones Venture Source. (Tweet This)

After the last round of funding, the company is now worth $50 billion. Uber is followed by Chinese smartphone vendor Xiaomi ($46 billion), which was the most valuable start-up last year, and Airbnb ($25.5 billion).

The majority of the world's top-10-valued start-ups are U.S. based, followed by China and then India. A few of these start-ups, namely Uber and Airbnb, have recently drawn awe and controversy for disrupting existing markets.

See The Wall Street Journal's original report here.