@techreport{NBERw12550,
 title = "Wealth Inequality: Data and Models",
 author = "Marco Cagetti and Mariacristina De Nardi",
 institution = "National Bureau of Economic Research",
 type = "Working Paper",
 series = "Working Paper Series",
 number = "12550",
 year = "2006",
 month = "October",
 URL = "http://www.nber.org/papers/w12550",
 abstract = {In the United States wealth is highly concentrated and very unequally distributed: the richest 1% hold one third of the total wealth in the economy. Understanding the determinants of wealth inequality is a challenge for many economic models. We summarize some key facts about the wealth distribution and what economic models have been able to explain so far.},
}