Working Paper
Maggiori, Matteo, Brent Neiman, and Jesse Schreger. “International Currencies and Capital Allocation,” 2017.Abstract
Finalist 2018 AQR Insight Award
Media Coverage: WSJ
Giglio, Stefano, Matteo Maggiori, Krishna Rao, Johannes Stroebel, and Andreas Weber. “Climate Change and Long-Run Discount Rates: Evidence from Real Estate,” 2016.Abstract

We explore what private market data can tell us about the appropriate discount rates for valuing investments in climate change abatement. We estimate the term structure of discount rates for real estate up to the very long horizons relevant for investments in climate change abatement. The housing term structure is downward-sloping, reaching 2.6% at horizons beyond 100 years. We also show that real estate is exposed to both consumption risk and climate risk. We explore the implications of these new data using a tractable asset pricing model that incorporates important features of climate change. Climate change is modeled as a rare catastrophic event, the probability of which increases with economic growth. Economic activity partially mean reverts following a climate disaster, capturing the ability of the economy to adapt. As a result, short-run cash flows are more exposed to climate risk than long-run cash flows, allowing us to match the observed housing term structure. The model and data provide simple yet powerful guidance for appropriate discount rates for investments that hedge climate disaster risk. The term structure of these discount rates is upward-sloping but bounded above by the risk-free rate. For extremely far horizons at which we do not observe the risk-free rate, the estimated long-run discount rates for housing (a risky asset) provide an upper bound that becomes tighter with maturity. This suggests that the appropriate discount rates for investments in climate change abatement are low at all horizons, substantially below those conventionally used for valuing these investments and for determining the social cost of carbon.

Non-technical summary: Vox
Revise and Resubmit at the Journal of Political Economy
Journal Article
Farhi, Emmanuel, and Matteo Maggiori. “A Model of the International Monetary System.” Quarterly Journal of Economics 133, no. 1 (2018): 295-355.Abstract

We propose a simple model of the international monetary system. We study the world supply and demand for reserve assets denominated in different currencies under a variety of scenarios: under a Hegemon vs. a multi-polar world; when reserve assets are abundant vs. scarce; under a gold exchange standard vs. a floating rate system; away from or at the zero lower bound (ZLB). We rationalize the Triffin dilemma which posits the fundamental instability of the system, the common prediction regarding the natural and beneficial emergence of a multi-polar world, the Nurkse warning that a multi-polar world is more unstable than a Hegemon world, and the Keynesian argument that a scarcity of reserve assets under a gold exchange standard or at the ZLB is recessive. We show that competition among few countries in the issuance of reserve assets can have perverse effects on the total supply of reserve assets. Our analysis is both positive and normative.

Non-technical Summary: Vox
Maggiori, Matteo. “Financial Intermediation, International Risk Sharing, and Reserve Currencies.” American Economic Review 107, no. 10 (2017): 3038-3071.Abstract

I provide a framework for understanding the global financial architecture as an equilibrium outcome of the risk sharing between countries with different levels of financial development. The country that has the most developed financial sector takes on a larger proportion of global fundamental and financial risk because its financial intermediaries are better able to deal with funding problems following negative shocks. This asymmetric risk sharing has real consequences. In good times, and in the long run, the more financially developed country consumes more, relative to other countries, and runs a trade deficit financed by the higher financial income that it earns as compensation for taking greater risk. During global crises, it suffers heavier capital losses than other countries, exacerbating its fall in consumption. This country's currency emerges as the world's reserve currency because it appreciates during crises and so provides a good hedge. The model is able to rationalize these facts, which characterize the role of the US as the key country in the global financial architecture.

Finance Theory Group Prize for Best Theory Papers on the Job Market, second prize (2012)
NYU Glucksman Institute Faculty Research Prize for the Best Paper in Finance (2013)
Giglio, Stefano, Matteo Maggiori, and Johannes Stroebel. “No-Bubble Condition: Model-Free Tests in Housing Markets.” Econometrica 84, no. 3 (2016): 1047-101.Abstract

We test for the existence of housing bubbles associated with a failure of the transversality condition that requires the present value of payments occurring infinitely far in the future to be zero. The most prominent such bubble is the classic rational bubble. We study housing markets in the U.K. and Singapore, where residential property ownership takes the form of either leaseholds or freeholds. Leaseholds are finite-maturity, pre-paid, and tradable ownership contracts with maturities often exceeding 700 years. Freeholds are infinite-maturity ownership contracts. The price difference between leaseholds with extremely-long maturities and freeholds reflects the present value of a claim to the freehold after leasehold expiry, and is thus a direct empirical measure of the transversality condition. We estimate this price difference, and find no evidence of failures of the transversality condition in housing markets in the U.K. and Singapore, even during periods when a sizeable bubble was regularly thought to be present.

Paper | Appendix
Non-technical Summary: Vox

Gabaix, Xavier, and Matteo Maggiori. “International Liquidity and Exchange Rate Dynamics.” Quarterly Journal of Economics 130, no. 3 (2015): 1369-1420.Abstract

We provide a theory of the determination of exchange rates based on capital flows in imperfect financial markets. Capital flows drive exchange rates by altering the balance sheets of financiers that bear the risks resulting from international imbalances in the demand for financial assets. Such alterations to their balance sheets cause financiers to change their required compensation for holding currency risk, thus impacting both the level and volatility of exchange rates. Our theory of exchange rate determination in imperfect financial markets not only helps rationalize the empirical disconnect between exchange rates and traditional macroeconomic fundamentals, but also has real consequences for output and risk sharing. Exchange rates are sensitive to imbalances in financial markets and seldom perform the shock absorption role that is central to traditional theoretical macroeconomic analysis. Our framework is flexible; it accommodates a number of important modeling features within an imperfect financial market model, such as non-tradables, production, money, sticky prices or wages, various forms of international pricing-to-market, and unemployment.

Paper | Appendix | Teaching slides
Media Coverage: Bloomberg

Giglio, Stefano, Matteo Maggiori, and Johannes Stroebel. “Very Long-Run Discount Rates.” Quarterly Journal of Economics 130, no. 1 (2015): 1-53 (Lead Article).Abstract

We estimate how households trade off immediate costs and uncertain future benefits that occur in the very long run, 100 or more years away. We exploit a unique feature of housing markets in the U.K. and Singapore, where residential property ownership takes the form of either leaseholds or freeholds. Leaseholds are temporary, pre-paid, and tradable ownership contracts with maturities between 99 and 999 years, while freeholds are perpetual ownership contracts. The price difference between leaseholds and freeholds reflects the present value of perpetual rental income starting at leasehold expiry, and is thus informative about very long-run discount rates. We estimate the price discounts for varying leasehold maturities compared to freeholds and extremely long-run leaseholds via hedonic regressions using proprietary datasets of the universe of transactions in each country. Households discount very long-run cash flows at low rates, assigning high present value to cash flows hundreds of years in the future. For example, 100-year leaseholds are valued at more than 10% less than otherwise identical freeholds, implying discount rates below 2.6% for 100-year claims.

Paper | Appendix | Rents Worksheet | Data Summary  
NYU Glucksman Institute Faculty Research Prize for the Best Paper in Finance (2015)
Jacob Gold & Associates Best Paper Prize, ASU Sonoram Winter Finance Conference (2014)
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Lettau, Martin, Matteo Maggiori, and Michael Weber. “Conditional Risk Premia in Currency Markets and Other Asset Classes.” Journal of Financial Economics 114, no. 2 (2014): 197-225.Abstract

The downside risk CAPM (DR-CAPM) can price the cross section of currency returns. The market-beta differential between high and low interest rate currencies is higher conditional on bad market returns, when the market price of risk is also high, than it is conditional on good market returns. Correctly accounting for this variation is crucial for the empirical performance of the model. The DR-CAPM can jointly explain the cross section of equity, commodity, sovereign bond and currency returns, thus offering a unified risk view of these asset classes. In contrast, popular models that have been developed for a specific asset class fail to jointly price other asset classes.

Paper | Appendix | Dataset
AQR Insight Award (2013)
Media Coverage: AQR AnnouncementWSJReuters