Bono Not a Billionaire With 2.3% Facebook Stake

May 21 (Bloomberg) -- In today's "Bloomberg Big Number" Bloomberg's Trish regan reports U2 front man Bono said he won’t become a billionaire after the flotation of Facebook shares. Bono's investment group, Elevation, took a 2.3 percent stake in Facebook in 2009. She speaks on Bloomberg Television's "InBusiness." (Source: Bloomberg)