On Swiss Timing and Selectivity: In the Quest of Alpha

This paper presents an overview of the theories underlying the major portfolio performance measurement models, with an empirical application to assess the market timing and stock-picking abilities of an exhaustive sample of 60 Swiss-equity investment funds over the 1977-1999 period. Regardless of the benchmark portfolio or the performance measurement model, we find no evidence that Swiss-equity mutual funds, either individually or as a whole, provide investors with superior stock selection or market timing relative to a passively managed benchmark portfolio. We also found a negative correlation between selectivity and timing results. Finally, the influence of asset size, funds age and management fees are considered as an explanation of the results.

Enhancing Portfolio Performance Using Option Strategies: Why Beating the Market is Easy.

The rapid growth of the use of options in portfolio management has been accompanied by a variety of claims regarding the performance of options strategies. In particular, many investors believe that they can enhance the performance of their pure-stock portfolios using systematic covered-call writing or protective put buying. Surprisingly, the results between similar studies from many brokerage firms, large banks or even academics devoted to these strategies differ considerably, and there is no clear evidence on whether a specific options strategy is superior. In this paper, we will review the results from the major research studies on options strategies and we will empirically examine the outcomes of such strategies on the Swiss market using various performance measures. We will also theoretically explain why some strategies regularly appear to outperform on a "risk" adjusted basis. Finally, we will show that when correctly measuring performance, these strategies do not dominate anymore.

Assessing Market Risk for Hedge Funds Portfolios

We suggest an empirical model to analyze the investment style of individual hedge funds and funds of funds. Our approach is based on a mixture of the style analysis approach suggested by Sharpe (1988), the factor push approach used in stress testing, and historical simulation. An interesting and straightforward extension of this model is the estimation of value-at-risk (VaR) figures. This extension is tested using a very intuitive implementation over a large sample of 2,934 hedge funds over the 1994-2000 period. Both the in-the-sample and the out-of-sample results suggest that the proposed approach is useful and may constitute a valuable tool for assessing the investment style and risk of hedge funds.hedge funds; style analysis; value at risk

Model misspecification analysis for bond options and Markovian hedging strategies

In this paper, we analyse the model misspecification risk of Markovian hedging strategies for discount bond options. We show how to decompose the Profit and Loss that results from model misspecification, and emphasize the importance of the position's gamma in order to control it. We further provide mathematical results on the distribution of the forward Profit and Loss function for specific univariate term structure models. Finally, we run numerical simulations for options' hedging strategies in order to examine the sensitivity of the forward Profit and Loss function with respect to the volatility of the forward rate curve, the frequency of the position rebalancing and the characteristics of the position being hedge

Model misspecification analysis for bond options and Markovian hedging strategies

In this paper, we analyse the model misspecification risk of Markovian hedging strategies for discount bond options. We show how to decompose the Profit and Loss that results from model misspecification, and emphasize the importance of the position's gamma in order to control it. We further provide mathematical results on the distribution of the forward Profit and Loss function for specific univariate term structure models. Finally, we run numerical simulations for options' hedging strategies in order to examine the sensitivity of the forward Profit and Loss function with respect to the volatility of the forward rate curve, the frequency of the position rebalancing and the characteristics of the position being hedge

Why are convertible bond announcements associated with increasingly negative issuer stock returns? An arbitrage-based explanation

While convertible offerings announced between 1984 and 1999 induce average abnormal stock returns of −1.69%, convertible announcement effects over the period 2000–2008 are more than twice as negative (−4.59%). We hypothesize that this evolution is attributable to a shift in the convertible bond investor base from long-only investors towards convertible arbitrage funds. These funds buy convertibles and short the underlying stocks, causing downward price pressure. Consistent with this hypothesis, we find that the differences in announcement returns between the Traditional Investor period (1984–1999) and the Arbitrage period (2000–September 2008) disappear when controlling for arbitrage-induced short selling associated with a range of hedging strategies. Post-issuance stock returns are also in line with the arbitrage explanation. Average announcement effects of convertibles issued during the Global Financial Crisis are even more negative (−9.12%), due to a combination of short-selling price pressure and issuer, issue, and macroeconomic characteristics associated with these offerings

Recent advances in hedge funds' performance attribution:performance persistence and fundamental factors

We survey articles on hedge funds' performance persistence and fundamental factors from the mid-1990s to the present. For performance persistence, we present some pioneering studies that contradict previous findings that hedge funds' performance is a short term matter. We discuss recent innovative studies that examine the size, age, performance fees and other factors to give a 360° view of hedge funds' performance attribution. Small funds, younger funds and funds with high performance fees all outperform the opposite. Long lockup period funds tend to outperform short lockups and domiciled funds tend to outperform offshore funds. This is the first survey of recent innovative and challenging studies into hedge funds' performance attribution, and it should be particularly useful to investors trying to choose between hedge funds