ETF Competition and Market Quality

This paper examines competition between exchange traded funds (ETFs) that hold nearly identical portfolios of securities. We provide evidence that incumbent‐fund liquidity is negatively affected when a new ETF is added to an asset class. The degradation in liquidity is even more severe whenever both funds follow the same benchmark. We also document a decline in primary‐market activity for the incumbent ETFs after the arrival of new competitors. Furthermore, increasing the number of funds in an asset class does not put downward pressure on fund management fees. Thus, the deterioration in market quality may not be offset by decreasing costs of fund ownership.     

<Emphasis Type="Italic">K</Emphasis>-fold cross validation performance comparisons of six naive portfolio selection rules: how naive can you be and still have successful out-of-sample portfolio performance?

Recent research reports that optimal portfolio selection models often perform worse than equal-weight naive diversification in out-of-sample testing. This paper extends this line of inquiry by comparing the out-of-sample performance of the equal-weight naive strategy to the out-of-sample performance of five alternative naive strategies, each of which derives from a simple heuristic that does not require any optimization. Out-of-sample portfolio performance is assessed by mean, standard deviation, skewness, and Sharpe ratio; k-fold cross validation is used as the out-of-sample testing mechanism. The results indicate that the proposed naive heuristic rules exhibit strong out-of-sample performance, in most cases superior to the equal-weight naive strategy. These findings are consequential for at least two reasons: first, if these simple heuristic-based rules outperform the equal-weight naive strategy, then by transitivity they can outperform the mean–variance- and shortfall-optimal portfolio rules that have been shown in the literature to be inferior to the equal-weight naive rule, which further emphasizes the out-of-sample fragility of “optimal” methods; and second, among naive diversification strategies, some appear more robust in out-of-sample testing than others, hence the proposed methods may be useful when forming mixed portfolio selection models wherein a naive strategy is combined with an optimal strategy to improve performance.     

The impact of nominal stock price on ex-dividend price responses

In this paper, we examine whether nominal stock price can help to explain the ex-dividend day anomaly where stock prices drop by less than the dividend amount on the ex-dividend date. We find that stocks with lower nominal prices have ex-dividend day price drops that are more consistent with theoretical predictions based on an efficient market. After controlling for factors that have been previously documented to influence ex-dividend day stock price behavior, price-drop-to-dividend ratios are closer to one for lower priced stocks. To further explore this phenomenon, we examine the change in the price-drop-to-dividend ratio around stock splits. Firms that split their shares have a larger price-drop-to-dividend ratio after the split, and companies that reverse split their shares have a smaller price-drop-to-dividend ratio after the split. Our evidence indicates that ex-dividend day stock price behavior is influenced by the nominal price of a share and that this relation could also influence the decision to split a firm’s shares.     

The Information Content of NAV Estimates

The Journal of Real Estate Finance and Economics - This paper investigates whether analysts’ estimates of firm fundamental value transmit unique information to security markets. Previous work...     

Patent pools and innovation in substitute technologies—evidence from the 19th‐century sewing machine industry

Patent pools, which combine complementary patents of competing firms, are expected to increase overall welfare but potentially discourage innovation in substitutes for the pool technology. This article exploits a new historical data set on changes in patenting and firm entry for a clearly defined pool technology and substitutes in the 19th‐century sewing machine industry. This analysis reveals a substantial increase in innovation for an—albeit technologically inferior—substitute technology. Historical evidence suggests that the creation of a pool‐diverted innovation toward an inferior substitute technology by creating differential license fees and litigation risks.     

Implementing Evidence-Based Practice in Health Care

This article summarizes recent research on the effectiveness of efforts to implement evidence-based health care. The authors conclude that the evidence in support of single interventions being effective in bringing about practitioner change is weak at best. The authors give examples and evaluative comments on more complex organizational and systemic interventions that are aimed at changing clinical practice, and discuss some of the barriers to their application.     

The critical discount factor as a measure for cartel stability?

This paper considers the stability of tacit collusion in price setting duopolies with repeated interaction. The minimum discount factor above which tacit collusion can be sustained in a subgame perfect equilibrium is called the critical discount factor δ*. In addition, δ* is often used as an intuitive measure for the stability of a tacit cartel, assuming that a collusive equilibrium is more difficult to sustain when δ* increases. However, according to standard theory the distance δ − δ* between the actual and the critical discount factor does not matter for stability as long as δ > δ*. This paper contributes experimental evidence that supports the intuitive idea that a larger critical discount factor makes collusion a less likely outcome.      

THE INFLUENCE OF FIRM‐ AND CEO‐SPECIFIC CHARACTERISTICS ON THE USE OF NONLINEAR DERIVATIVE INSTRUMENTS

We examine why firms use nonlinear derivatives (e.g., options). Our results suggest that option characteristics in investment opportunities and debt, the payoff structure of incentive compensation, and free cash‐flow agency problems influence the firm's choice. Investment opportunities, internally generated cash flow, business risk, and option compensation positively influence the use of nonlinear currency derivatives. Option feature in bonds positively influence the use of nonlinear interest rate derivatives, whereas bonus and stock compensation, and CEO tenure have a negative influence. In sum, nonlinear cash flow characteristics in investment opportunity, debt, and executive compensation all relate positively to nonlinear derivative usage.     

THE IMPACT OF THE INDONESIAN FINANCIAL CRISIS ON CHILDREN: AN ANALYSIS USING THE 100 VILLAGES DATA

This paper examines the impact of the Asian financial crisis on children in Indonesia. Specifically, data from four rounds of the 100 Villages Survey are used to examine changes in school attendance rates, child labour force participation and health status. The paper also examines ways in which households are coping with the crisis. The findings provide little evidence that the crisis has had a dramatic negative impact on children. School attendance dropped slightly after the onset of the crisis but has since rebounded to higher than pre-crisis levels. Fewer children are now working, although the older children who are working and not attending school seem to be working longer hours. Comparisons of child health status indicators over time are complicated by changes in the questionnaire but appear to show a relatively stable pattern of child health.