<span style="color: rgb(67, 71, 75); font-family: open_sansregular, HelveticaNeue, Helvetica, Arial, sans-serif; font-size: 14px; line-height: 25px;">Julian Robertson stayed calm after Greeks lined up at ATMs to hoard cash, the longest bull market in China’s history tumbled to an end and Puerto Rico’s governor said the U.S. commonwealth couldn’t pay its debt. The billionaire even had reasons to smile.</span>