<p class="MsoNormal"><span style="color:#666666">Chinese tech behemoth JD.com kicked off trading on June 18 after raising $3.9 billion in an IPO that was the world's second-largest so far this year. The bumper sale comes amid rising tension between Beijing and Washington because of the implementation of a new national security law on Hong Kong. </span></p><p class="MsoNormal"></p>