When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
About our authors Andrew B. Abel is Ronald A. Rosenfeld Professor of Finance at The Wharton School and professor of economics at the University of Pennsylvania. He received his AB summa cum laude from Princeton University and his PhD from the Massachusetts Institute of Technology.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.