TY - JOUR AU - Cook,Philip J. AU - Ludwig,Jens AU - Venkatesh,Sudhir AU - Braga,Anthony A. TI - Underground Gun Markets JF - National Bureau of Economic Research Working Paper Series VL - No. 11737 PY - 2005 Y2 - November 2005 UR - http://www.nber.org/papers/w11737 L1 - http://www.nber.org/papers/w11737.pdf N1 - Author contact info: Philip J. Cook Sanford School of Public Policy Duke University 215 Sanford Building Durham, NC 27708-0245 Tel: 919 613 7360 Fax: 919/681-8288 E-Mail: pcook@duke.edu Jens Ludwig University of Chicago 1155 East 60th Street Chicago, IL 60637 Tel: 773/834-0811 Fax: 773/834-1582 E-Mail: jludwig@uchicago.edu Sudhir Venkatesh Columbia University E-Mail: sv185@columbia.edu Anthony Braga Harvard University E-Mail: anthony_braga@ksg.harvard.edu AB - This paper provides an economic analysis of underground gun markets drawing on interviews with gang members, gun dealers, professional thieves, prostitutes, police, public school security guards and teens in the city of Chicago, complemented by results from government surveys of recent arrestees in 22 cities plus administrative data for suicides, homicides, robberies, arrests and confiscated crime guns. We find evidence of considerable frictions in the underground market for guns in Chicago. We argue that these frictions are due primarily to the fact that the underground gun market is both illegal and %u201Cthin%u201D -- the number of buyers, sellers and total transactions is small and relevant information is scarce. Gangs can help overcome these market frictions, but the gang%u2019s economic interests cause gang leaders to limit supply primarily to gang members, and even then transactions are usually loans or rentals with strings attached. ER -