U.S. office vacancy rate rises marginally in third quarter - Reis <!-- no image --> <div>The U.S. office vacancy rate rose marginally to 16.8% in the third quarter from a year earlier, according to real estate research firm Reis Inc.<div class="feedflare"> <a href="http://feeds.reuters.com/~ff/reuters/UKBankingFinancial?a=0-E7alx81HI:ruTRuY8kpNU:yIl2AUoC8zA"><img src="http://feeds.feedburner.com/~ff/reuters/UKBankingFinancial?d=yIl2AUoC8zA" border="0"></a> <a href="http://feeds.reuters.com/~ff/reuters/UKBankingFinancial?a=0-E7alx81HI:ruTRuY8kpNU:V_sGLiPBpWU"><img src="http://feeds.feedburner.com/~ff/reuters/UKBankingFinancial?i=0-E7alx81HI:ruTRuY8kpNU:V_sGLiPBpWU" border="0"></a> <a href="http://feeds.reuters.com/~ff/reuters/UKBankingFinancial?a=0-E7alx81HI:ruTRuY8kpNU:F7zBnMyn0Lo"><img src="http://feeds.feedburner.com/~ff/reuters/UKBankingFinancial?i=0-E7alx81HI:ruTRuY8kpNU:F7zBnMyn0Lo" border="0"></a> </div><img src="http://feeds.feedburner.com/~r/reuters/UKBankingFinancial/~4/0-E7alx81HI" height="1" width="1" alt=""></div> Posted by Reuters