Oppenheimer Upgrades InterXion Holding To Outperform By: Benzinga via Benzinga June 11, 2015 at 09:44 AM EDT Oppenheimer upgraded InterXion Holding NV (NYSE: INXN) from Perform to Outperform. InterXion Holding shares have gained 4.10 percent ... Read More >> Related Stocks: Interxion Holding Ord Shs