Using the widely-cited Lee-Carter mortality model, we quantify aggregate mortality risk as the risk that the average annuitant lives longer than is predicted by the model, and we conclude that annuity business exposes insurance companies to substantial mortality risk. We calculate that a markup...

We develop a comprehensive model of 401(k) pension design that reflects the complex tax, savings, liquidity and investment incentives of such plans. Using a new dataset on some 500 plans covering nearly 740,000 workers, we show that employer matching contributions have only a modest impact on...

Mutual funds must disclose their portfolio holdings to investors semiannually. The costs and benefits of such disclosures are a long-standing subject of debate. For actively managed funds, one cost of disclosure is a potential reduction in the private benefits from research on asset values....

Some research has suggested that companies with defined benefit (DB) pensions are sometimes significantly misvalued by the market. This is because the measures of pension cost and pension net liabilities embedded in financial statements, taken at face value, can provide very misleading picture...

We use mutual fund flows as a measure for individual investor sentiment for different stocks, and find that high sentiment predicts low future returns at long horizons. Fund flows are dumb money %uF818 by reallocating across different mutual funds, retail investors reduce their wealth in the...

Over the past two and a half decades there has been a fundamental change in saving for retirement in the United States, with a rapid shift from employer-managed defined benefit pensions to defined contribution saving plans that are largely controlled by employees. To understand how this change...

This paper examines the economic rationale for, historical experience of, and current pressures facing the Pension Benefit Guaranty Corporation (PBGC). The PBGC is the government entity which partially insures participants in private-sector defined benefit pension plans against the loss of...

Demographic change can have an important effect on the stock of assets held in defined benefit pension plans. This paper projects the impact of changes in the age structure of the U.S. population between 2005 and 2040 on the stock of assets held by these plans. It projects the contributions to...

Defaults can have a dramatic influence on consumer decisions. We identify an overlooked but practical alternative to defaults: requiring individuals to make an explicit choice for themselves. We study such "active decisions" in the context of 401(k) saving. We find that compelling new hires to...

We present a model of coarse thinking, in which individuals group situations into categories, and transfer the informational content of a given message from situations in a category where it is useful to those where it is not. The model explains how uninformative messages can be persuasive,...