This paper discusses the link between financial development and macroeconomic volatility by exploring some of the ways through which financial development may affect business cycle fluctuations. To be specific, we examine whether stock market development exerts an unambiguous effect on...

This paper discusses the link between financial development and macroeconomic volatility by exploring some of the ways through which financial development may affect business cycle fluctuations. To be specific, we examine whether stock market development exerts an unambiguous effect on...

Optimal investment of firms implies that expected stock returns are tied with the expected marginal benefit of investment divided by the marginal cost of investment. Winners have higher expected growth and expected marginal productivity (two major components of the marginal benefit of...

We offer an investment-based interpretation of price and earnings momentum. The neoclassical theory of investment implies that expected stock returns are tied with the expected marginal benefit of investment divided by the marginal cost of investment. Winners have higher expected growth and...

I show that when prices are sticky the Q theory of firms' behavior predicts that market-book ratios increase as inflation expectations diminish, holding investment fixed. In the data stock prices and investment correlate poorly precisely when stock prices and inflation move in opposite...

Operating leverage (OL) and profitability are interrelated determinants of stock returns. We show that the outperformance of firms with high OL is driven by periods of unconstrained aggregate funding conditions. Firms with high OL are more risky in general, but when the Fed eases funding...

We present an estimated dynamic stochastic general equilibrium model of stock market bubbles and business cycles using Bayesian methods. Bubbles emerge through a positive feedback loop mechanism supported by self-fulfilling beliefs. We identify a sentiment shock that drives the movements of...

The stock market should fund promising new firms, thereby breeding competition, innovation, and economic growth. However, using three decades of data from 47 countries, we show that concentrated stock markets dominated by a small number of very successful firms are associated with less efficient...

The choice of instruments for mitigating economic volatility is a serious consideration for policymakers and important question in government and economics. Using a DSGE model with endogenous technology creation, we show that efficient financial markets are more effective than conventional...

In a production economy with trade in financial markets motivated by the desire to share labor-income risk and to speculate, we show that speculation increases volatility of asset returns and investment growth, increases the equity risk premium, and reduces welfare. Regulatory measures, such as...