Earning 149x returns for early investor, Mercari IPO party turns hottest startup payoff Mercari Inc. CEO Shintaro Yamada poses for a photograph during an interview with Reuters in Tokyo, Japan April 2, 2018. REUTERS/Yoshiyasu Shida Yuji Nakamura June 14, 2018 PremiumOne of the year’s most spectacular startup payoffs isn’t in Silicon Valley or China, it’s in Japan. Continue reading this story with a subscription to DealStreetAsia. Subscribe Already a subscriber? Log in Should your colleagues be reading this article too? Contact us for corporate subscriptions at email@example.com.