Weak instruments can produce biased IV estimators and hypothesis tests with large size distortions. But what, precisely, are weak instruments, and how does one detect them in practice? This paper proposes quantitative definitions of weak instruments based on the maximum IV estimator bias, or the...

We derive the optimal portfolio of longevity products during the retirement phase. The households health state moves stochastically and the longevity products are priced consistent with equilibrium in the insurance market. The household has recursive preferences, which allows us to study the...

We develop an asset pricing model with rich heterogeneity in asset demand across investors, designed to match institutional holdings data. The equilibrium price vector is uniquely determined by market clearing, which equates the supply of each asset to aggregate demand. We estimate the model on...

When utility is nonseparable in nondurable and durable consumption and the elasticity of substitution between the two consumption goods is sufficiently high, marginal utility rises when durable consumption falls. The model explains both the cross-sectional variation in expected stock returns and...

This paper evaluates the equity premium using novel data on the consumption of luxury goods. Specifying utility as a nonhomothetic function of both luxury and basic consumption goods, we derive pricing equations and evaluate the risk of holding equity. Household survey and national accounts data...

Movements in the value of corporate assets are justified by changes in expected future cash flow. The appropriate measure of cash flow for valuing assets is net payout, which is the sum of dividends, interest, and net repurchases of equity and debt. When discount rates are low and equity...

The demand for durable goods is more cyclical than that for nondurable goods and services. Consequently, the cash flows and stock returns of durable‐good producers are exposed to higher systematic risk. Using the benchmark input‐output accounts of the National Income and Product Accounts, we...

expenditure share for basic goods declines in total consumption, and the variance of consumption growth rises in the level of consumption. When calibrated to match these two predictions in household consumption data, the model explains portfolio shares that rise in wealth.