The 1980s S&L debacle is generally viewed as the result of: (1) sharply rising interest rates eliminating the net worth of thrifts funding fixed-rate loans with short-term deposits and (2) thrifts responding by taking even greater interest-rate and credit risks. The question investigated in this...

Between the early 1980s and 1986, the share of new conforming (under $153,000 in 1986) conventional fixed-rate mortgages (FRMs) that went into Fannie Mae and Freddie Mac mortgage pools increased from under 5 percent to over 50 percent. The impact of these agencies moving from negligible...