NEW YORK, NY - APRIL 17: The Nasdaq exchange advertises China's Weibo in Times Square moments before it began trading on the Nasdaq exchange under the ticker symbol WB on April 17, 2014 in New York City. Weibo Corp, a Twitter-like messaging service company, priced its initial public offering (IPO) at $17 per American Depository Share (ADS). (Photo by Spencer Platt/Getty Images)
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