A speculative security is an asset whose payoff depends on a random shock uncorrelated with economic fundamentals (a sunspot) about which some traders have superior information. In this paper we show that agents may find it desirable to trade such a security in spite of the fact that it is a...

The paper argues that the market significantly overvalues firms with severely underfunded pension plans. These companies earn lower stock returns than firms with healthier pension plans for at least five years after the first emergence of the underfunding. The low returns are not explained by...

This paper documents that at the individual stock level insiders sales peak many months before a large drop in the stock price, while insiders purchases peak only the month before a large jump. We provide a theoretical explanation for this phenomenon based on trading constraints and asymmetric...

We introduce a new dynamic trading strategy based on the systematic mispricing of U.S. companies sponsoring Defined Benefit pension plans. This portfolio produces an average return of 1.51% monthly between 1989 and 2004, with a Sharpe Ratio of 0.26. The returns of the strategy are not explained...

We explore the role of corporate insiders vs. firms as traders of last resort. We develop a simple model of insider trading in which insiders provide price support, as well as liquidity, in security markets. Consistent with the model predictions we find that in the US markets insiders' trading...

We study the use of derivatives in the Spanish mutual fund industry. The picture that emerges from our analysis is rather negative. In general, the use of derivatives does not improve the performance of the funds. In only one out of eight categories we find some (very weak and not robust)...

Fund managers are double agents; they serve both fund investors and owners of management firms. This conflict of interest may result in trading to support securities prices. Tests of this hypothesis in the Spanish mutual fund industry indicate that bank-affiliated mutual funds systematically...

Banking crises are recurrent phenomena, often induced by ex-ante excessive bank risk-taking, which may be due to behavioral reasons (over-optimistic banks neglecting risks) and to agency problems between bank shareholders with debt-holders and taxpayers (banks understand high risk-taking). We...

As a consequence of the recent bear stock market, the aggregate funding level of defined benefit pension plans has tremendously deteriorated. A relevant issue is whether the market value of the firms sponsoring these plans reflects their pension liabilities. In sharp contrast with earlier...

We define two measures: the Model Performance Ratio (MPR), which ranks asset pricing models based on their ability to price random portfolios, and the Rate of Market Efficiency (RME), which measures market efficiency assuming the best pricing model (largest MPR). We find that: (i) market...