The roles of Fannie Mae and Freddie Mac have become increasingly controversial in the modern world of residential mortgage finance. We describe the special features of these two companies and their roles in the mortgage markets. We then discuss the controversies that surround them and offer...

This paper will explore how the financial regulatory structure propelled three credit rating agencies -- Moody's, Standard & Poor's (S&P), and Fitch -- to the center of the U.S. bond markets -- and thereby virtually guaranteed that when these rating agencies did make mistakes, these mistakes...

I assemble two rarely used data sets to measure aggregate concentration in the U.S. in the 1980s and 1990s. Despite the merger waves of those decades, aggregate concentration declined in the 1980s and the early 1990s, but rose modestly in the late 1990s. The levels at the end of the decade were...

It may have come as a shock to many economists, especially those in academia, to learn that the Antitrust Division of the U.S. Department of Justice (DOJ) has been investigating alleged price fixing and information exchange of financial aid among 23 prestigious east coast colleges and...