Knowledge that Transforms

We present a continuous-time asset pricing model of the levered firm where shareholders select not only the timing but also the form of abandonment. Shareholders can walk out of the firm either by (i) defaulting on their debt obligations or (ii) selling their shares to alternative operators of, the technologies, as in a corporation sale . The structural model relates shareholders' ex-post choice to both technological and financial factors. Considering that operators' technological supremacy is not universal, we obtain that whereas default necessarily involves an inefficient timing of ownership transfer, corporation sales do not. Then, the likelihood of default being chosen instead of a corporation sale increases with (i) the degree of leverage displayed by the firm and (ii) its technological supremacy. By ignoring corporation sales, existing defaultable bond pricing models have thus a tendency to exaggerate risk premia and underestimate the borrowing ability (debt capacity) of firms.

This paper provides a survey of existing literature on portfolio allocations in conventional and tax-deferred investment habitats. A long-standing puzzle in this literature has been the dissonance between the theoretical prediction of tax-efficient portfolio choices and observed portfolio allocations. I clarify this prediction and offer a different perspective by emphasizing the importance of uninsurable labor income risk and restrictions on accessibility of tax-deferred assets. I identify the key factors in dual-habitat portfolio decisions and highlight the necessary ingredients for producing non-tax-efficient, or precautionary, allocations.

Global turnover in foreign exchange markets averaged $1.2 trillion per day according to the most recent estimates available from the Bank for International Settlements. 1 Yet, cross-border trade of goods and services accounts for less than 5 percent of the total trading. While it is difficult to get precise estimates on hedging, roughly 20 percent of total trading is aimed at hedging against future exchange rate changes. The remaining roughly 75 percent of total turnover in global foreign exchange markets is believed to be related to short or long term exchange rate speculation. The large fraction of global turnover in currency markets that is unrelated to trade or hedging has lead economists and policy markets to the conjecture that speculation is responsible for the perceived recent increase in volatility in foreign exchange markets. Several economists, most prominently Nobel Laureate Dr. James Tobin, have advocated levying a tax (a "Tobin tax") on foreign exchange transactions to reduce volatility induced by exchange rate speculation. Recently, several European countries spearheaded by France have debated a proposed legislation to impose a tax on currency transactions. 2 However, to date, there is no strong empirical evidence that an increase in transactions costs (which would be the result of a Tobin tax) would significantly dampen volatility. On the contrary, This is the first piece of legislation in the world that would implement a Tobin-type tax. Belgium passed similar legislation in March, 2002, and several other European Union member countries have debated a Tobin tax. See www.currencytax.org.

This paper analyzes inspection and closure policies of a bank, and the strategic reaction of its managers/shareholders when they can (costly) manipulate the information available to the regulator. We derive optimal intervention policy, and analyze its effect on managerial strategies. Regulatory intervention may induce shareholders to manipulate the information available to the regulator in order to avoid intervention and closure, and we find that these incentives to manipulate information may increase with tighter capital requirements. Finally we show that, in order to avoid manipulation by the banker, some degree of forbearance in closure may be ex ante optimal.

In this paper we present an analytical method in pricing European contingent assets, whose state variables follow a multi-dimensional Lévy process. We give an explicit formula for the hypothetical European “two-price” call option price by means of the conditiona characteristic transform. The work not only unifies and extends the option pricing literature, which focuses on the use of the characteristic function, but also provides the way to formalizeand unify the valuation of the option price, the valuation of the discount bond price, the valuation of the scaled-forward price, and the valuation of the pricing measure in incomplete markets.

Using an arbitrage approach,

Fama and French (1992) show that size and book-to-price dominate CAPM beta and other variables such as the price-earnings ratio and dividend yield in explaining the cross-section of US stock returns. Comparable evidence for the UK points to a book-to-price effect, but not a size effect (Chan and Chui, 1996; Strong and Xu, 1997). In this paper, our first contribution is to show that a measure of research and development (RD) helps explain cross-sectional variation in UK stock returns. Our cross-sectional results on the association between stock returns and RD are consistent with recent US evidence reported by Lev and Sougiannis (1996, 1999) and Chan, Lakonishok and Sougiannis (2001).Fama and French (1993, 1995, 1996) also show that a three-factor model captures a high proportion of the time series variation in portfolio returns, again for the US. Our second contribution is to show, for the UK, that a modification to the three-factor model to take account of RD activity can significantly enhance the explanatory power of the three-factor model. We show that, as a practical matter, estimated risk premia based on the modified three-factor model can differ considerably from risk premia estimated using the CAPM or the three-factor model. In particular, risk premia for industries in which few firms undertake RD activities tend to be over-estimated.

This paper analyzes the issue costs and initial pricing of bonds in the international market. In particular, we investigate the determinants of three components of issue costs: underwriter fee, underwriter spread (the difference between the offering price and the guaranteed price to the issuer), and underpricing (the difference between the market price and the offering price). Total underwriter compensation increases with the bonds’ credit risk and maturity, but it is insignificantly related to issue size. Interestingly, underwriters appear to price some issue characteristics directly (by adjusting the fee) and other characteristics indirectly (by setting the guaranteed price). The two compensation components (fee and spread) are negatively related to each other. We provide evidence that this trade-off is consistent with income tax considerations, as well as with two-tier pricing by underwriters. We find no evidence of underpricing.

We present an approximation method for pricing and hedging American options written on a dividend-paying asset. This method is based on Kim (1990) equations. We demonstrate that a simple approximation of the Kim integral equations by quadrature formulas leads to an efficient and accurate numerical procedure. This approximation is accompanied by the Newton–Raphson iteration procedure in order to compute the optimal exercise boundary at each time point. The proposed sequence of approximations converges monotonically, convergence is fast and accuracy is high, even for long maturity options. We compare numerically our results with other competing approaches by different authors.