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Inequality, stock market participation, and the equity premium

Journal of Financial Economics 2013 107(3), 740-759 open access
The last 30 years saw substantial increases in wealth inequality and stock market participation, smaller increases in consumption inequality and the fraction of indebted households, a decline in interest rates and the expected equity premium, as well as a prolonged stock market boom. In an incomplete markets, overlapping generations model I jointly explain these trends by the observed rise in wage inequality, decrease in participation costs, and loosening of borrowing constraints. After accounting for these changes, I show that the stock market played a major role in increasing wealth inequality. Crucially, these phenomena must be considered jointly; studying one independently leads to counterfactual predictions about others.

Why momentum concentrates among overvalued stocks?

Review of Finance 2024 28(2), 389-412 open access
We uncover a link between momentum and overvaluation: assets that generate strong momentum profits have lower risk-adjusted unconditional returns; conversely, trading momentum within overvalued assets doubles the profit of the standard momentum strategy. We compute the profits of a momentum strategy within various portfolios; portfolios within which momentum is profitable are defined as momentum trading opportunity (MTO). High-MTO assets have negative unconditional alphas and concentrate in the short legs of most anomalies; controlling for MTO reduces anomaly alphas by up to half. These results imply that the existence of other anomalies is closely linked to the existence of momentum and they should be studied jointly.

Wage Rigidity: A Quantitative Solution to Several Asset Pricing Puzzles

Review of Financial Studies 2016 29(1), 148-192
In standard production models, wage volatility is far too high, and equity volatility is far too low. A simple modification–sticky wages because of infrequent resetting together with a constant elasticity of substitution (CES) production function leads to both smoother wages and higher equity volatility. Further, the model produces several other hard-to-explain features of financial data: high Sharpe ratios, low and smooth interest rates, time-varying equity volatility and premium, a value premium, and a downward-sloping equity term structure. Procyclical, volatile wages are a hedge for firms in standard models; smoother wages act like operating leverage, making profits and dividends riskier. Received July 30, 2013; accepted July 6, 2015 by Editor Geert Bekaert.

Wage Rigidity: A Quantitative Solution to Several Asset Pricing Puzzles

Review of Financial Studies 2016 29(1), 148-192
In standard production models, wage volatility is far too high, and equity volatility is far too low. A simple modification-sticky wages because of infrequent resetting together with a constant elasticity of substitution (CES) production function leads to both smoother wages and higher equity volatility. Further, the model produces several other hard-toexplain features of financial data: high Sharpe ratios, low and smooth interest rates, time-varying equity volatility and premium, a value premium, and a downward-sloping equity term structure. Procyclical, volatile wages are a hedge for firms in standard models; smoother wages act like operating leverage, making profits and dividends riskier.

Out‐of‐Town Home Buyers and City Welfare

Journal of Finance 2021 76(5), 2577-2638
ABSTRACT Many cities have attracted a flurry of out‐of‐town (OOT) home buyers. Such capital inflows affect house prices, rents, construction, labor income, wealth, and ultimately welfare. We develop an equilibrium model to quantify the welfare effects of OOT home buyers for the typical U.S. metropolitan area. When OOT investors buy 10% of the housing in the city center and 5% in the suburbs, welfare among residents falls by 0.61% in consumption‐equivalent units. House prices and rents rise substantially, resulting in welfare gains for owners and losses for renters. Policies that tax OOT buyers or mandate renting out vacant property mitigate welfare losses.

Affordable Housing and City Welfare

Review of Economic Studies 2023 90(1), 293-330 open access
Housing affordability is the main policy challenge for most large cities in the world. Zoning changes, rent control, housing vouchers, and tax credits are the main levers employed by policymakers. How effective are they at combatting the affordability crisis? We build a dynamic stochastic spatial equilibrium model to evaluate the effect of these policies on the well-being of its citizens. The model endogenizes house prices, rents, construction, labour supply, output, income, and wealth inequality, the location decisions of households within the city as well as inter-city migration. Its main novel features are risk, risk aversion, and incomplete risk-sharing. We calibrate the model to the New York metropolitan statistical area. Housing affordability policies carry substantial insurance value but affect aggregate housing and labour supply and cause misallocation in labour and housing markets. Housing affordability policies that enhance access to this insurance especially for the neediest households create substantial net welfare gains.

The Elephant in the Room: The Impact of Labor Obligations on Credit Markets

American Economic Review 2020 110(6), 1673-1712 open access
We show that labor market frictions are first-order for understanding credit markets. Wage growth and labor share forecast aggregate credit spreads and debt growth as well as or better than alternative predictors. They also predict credit risk and debt growth in a cross section of international firms. Finally, high labor share firms choose lower financial leverage. A model with labor market frictions and risky long-term debt can explain these findings, and produce large credit spreads despite realistically low default probabilities. This is because precommitted payments to labor make other committed payments (i.e., interest) riskier. (JEL D33, E23, E24, E25, E44, F23, G32)

The Macroeconomic Effects of Housing Wealth, Housing Finance, and Limited Risk Sharing in General Equilibrium

Journal of Political Economy 2017 125(1), 140-223
This paper studies a quantitative general equilibrium model of housing. The model has two key elements not previously considered in existing quantitative macro studies of housing finance: aggregate business cycle risk and a realistic wealth distribution driven in the model by bequest heterogeneity in preferences. These features of the model play a crucial role in the following results. First, a relaxation of financing constraints leads to a large boom in house prices. Second, the boom in house prices is entirely the result of a decline in the housing risk premium. Third, low interest rates cannot explain high home values.