Note on the Pricing of Mortgage-Backed Securities

Jay O. Light; Jeremy C. Stein

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Background Note | HBS Case Collection | January 1987 (Revised March 1989)

Note on the Pricing of Mortgage-Backed Securities

by Jay O. Light and Jeremy C. Stein

Abstract

An introduction to mortgage-backed securities, prepayment risk, and their market pricing.

Keywords: Price; Debt Securities; Mortgages; Financial Services Industry;

Format: Print

12 pages

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Citation:

Light, Jay O., and Jeremy C. Stein. "Note on the Pricing of Mortgage-Backed Securities." Harvard Business School Background Note 287-060, January 1987. (Revised March 1989.)

About the Author

Jay O. Light

George F. Baker Professor of Administration, Emeritus

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Article | Journal of Public Economics | January 2020

The Impact of Mass Shootings on Gun Policy

Michael Luca, Deepak Malhotra and Christopher Poliquin

There have been dozens of high-profile mass shootings in recent decades. This paper presents three main findings about the impact of mass shootings on gun policy. First, mass shootings evoke large policy responses. A single mass shooting leads to a 15% increase in the number of firearm bills introduced within a state in the year after a mass shooting. This effect increases with the extent of media coverage. Second, mass shootings account for a small portion of all gun deaths but have an outsized influence relative to other homicides. Third, when looking at bills that were actually enacted into law, the impact of mass shootings depends on the party in power. The annual number of laws that loosen gun restrictions doubles in the year following a mass shooting in states with Republican-controlled legislatures. We find no significant effect of mass shootings on laws enacted when there is a Democrat-controlled legislature, nor do we find a significant effect of mass shootings on the enactment of laws that tighten gun restrictions.

Keywords: gun violence; gun policy; Crime and Corruption; Governance; Policy; United States;

Citation:
Luca, Michael, Deepak Malhotra, and Christopher Poliquin. "The Impact of Mass Shootings on Gun Policy." Art. 104083. Journal of Public Economics 181 (January 2020). View Details

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Working Paper | 2020

A Quantity-Driven Theory of Term Premia and Exchange Rates

Robin Greenwood, Samuel G. Hanson, Jeremy C. Stein and Adi Sunderam

We develop a model in which specialized bond investors must absorb shocks to the supply and demand for long-term bonds in two currencies. Since long-term bonds and foreign exchange are both exposed to unexpected movements in short-term interest rates, a shift in the supply of long-term bonds in one currency influences the foreign exchange rate between the two currencies, as well as bond term premia in both currencies. Our model matches several important empirical patterns, including the co-movement between exchange rates and term premia, as well as the finding that central banks’ quantitative easing policies impact exchange rates. An extension of our model sheds light on the persistent deviations from covered interest rate parity that have emerged since 2008.

Keywords: term premium; exchange rate; Bonds; Currency; Theory;

Citation:
Greenwood, Robin, Samuel G. Hanson, Jeremy C. Stein, and Adi Sunderam. "A Quantity-Driven Theory of Term Premia and Exchange Rates." NBER Working Paper Series, No. 27615, July 2020. View Details

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Article | Journal of Finance | June 2018

The Fed, the Bond Market, and Gradualism in Monetary Policy

Jeremy C. Stein and Adi Sunderam

We develop a model of monetary policy with two key features: (i) the central bank has some private information about its long-run target for the policy rate, and (ii) the central bank is averse to bond-market volatility. In this setting, discretionary monetary policy is gradualist: the central bank only adjusts the policy rate slowly in response to changes in its target. Such gradualism represents an attempt to not spook the bond market. However, this effort is partially undone in equilibrium, as long-term rates rationally react more to a given move in short rates when the central bank moves more gradually. The same desire to mitigate bond-market volatility can lead the central bank to lower short rates sharply when publicly observed term premiums rise. In both cases, there is a time-consistency problem, and society would be better off with a central banker who cares less about the bond market.

Keywords: Central Banking; Interest Rates; Policy; Bonds; Financial Markets;

Citation:
Stein, Jeremy C., and Adi Sunderam. "The Fed, the Bond Market, and Gradualism in Monetary Policy." Journal of Finance 73, no. 3 (June 2018): 1015–1060. View Details

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Note on the Pricing of Mortgage-Backed Securities

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