Reading 53: Evaluation of the Performance of your Hedge Funds

1. There are generally four types of hedge funds: Long/short funds, Global Macro Funds, Event Driven funds and market neutral funds.

2. Two methods of evaluation performance:

Jensen’s Alpha (ex post alpha): E(R)= Rf+ Beta (Market Risk Premium). Positive alpha means the port. is undervalued and a negative alpha means the port. is over-valued.

The Sharpe Ratio: (Ra-Rf)/Standard Deviation

3. It is difficult to compare a hedge fund to a benchmark due to the following reasons-

• Changes in Leverage- Even though a Fixed income arbitrage hedge fund might use leverage as high as 20 times its capital base, the benchmark index that is used is not multiplied twenty times.

• Changes in Hedging Techniques- Even though a market neutral fund has very low volatility because of the long and short positions that it takes, it is affect by the change in the market index. It maintains its short position either by short selling stock or by purchasing put options and paying the put premium. In case of a down market, short selling is more advantageous, even though the put option caps the loss at the premium paid, because short selling is much better than a deep out-of-money put option.

• Style Drift- Managers of hedge funds can always change their styles to take advantage of mispricing. In such a case, the original benchmark might no longer be appropriate.

• Portfolio Turnover- Managers might increase the turnover to exploit the volatility in the market and they might stray from their stated strategy. The return earned in such a case might be pure luck…you never know.

4. Evaluating a hedge fund’s performance: There are 3 different benchmarks that can be used: Broad Market Indexes, Hedge Fund Indexes and Risk free return.

Broad Market Index:

Both the Sharpe Ratio and the Jensen’s alpha method pose problems because they use S&P 500 for the evaluation of the performance, which might not be appropriate for evaluating fixed income arbitrage hedge funds. Second, the hedge fund’s beta can change depending upon the change in strategy. Third, alpha changes depending upon the time interval.

It has been found that Merrill Lynch High Yield Index is a good benchmark for fixed income arbitrage funds and Russell 3000 is a good benchmark for various equity funds like long/short equity, market neutral funds, global macro funds or emerging market funds.

Hedge Fund Index:

Different hedge funds have diff. strategies and are difficult to compare. This type of benchmark suffers from data and questionable statistics problem:

Data Problems:

• Voluntary report of performance of hedge funds means that many times, hedge funds with poor performance don’t submit their reports
• The returns of some large hedge funds might be excluded
• self-reported hedge fund data is not confirmed by index providers.

Questionable stats problems:

• Constituent funds change over time, so the index is inconsistent
• funds are subjected to survivorship and backfill bias
• some hedge funds are closed to new investors
• serial correlation in hedge funds lead to low standard deviation
• the historical record of hedge funds is very limited.

Risk Free Rate Method: Many managers feel that if a premium is added to the risk free rate, then it should give a nice assessment for the management and marketing fees and will make for a nice benchmark.

Of the equity funds, market neutral fund has a return that is closest to the risk free rate. Even though these funds are supposed to have zero beta, it is not always so, because if they are neutral on the basis of dollars, then the beta will not be zero. Hence, some risk is always there. Besides, it might also have some unsystematic risk.

On the fixed income side, the arbitrage funds take long positions on corporate bonds and a short position on the treasury bonds and seek to exploit the credit spread. In case of the crisis, if the yield on the corp. bond rises ( price decreases) and the yield on treasury bond falls (price increases) , then they will suffer huge losses. Besides, they also use a very high leverage. So risk free rate is not a good benchmark.

Conclusion: Never use any one benchmark in isolation, instead mix and match all of them. It is necessary to keep in mind the investor’s investment objective, the style, risk and leverage. For equity funds- we should should a weighted average beta to conclude the required return. For fixed income funds, we should multiply the credit spread by the leverage used. In either cases, a benchmark based on several factors may be used.

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Tags: HedgeFunds, Equity Vauation, CFA, Finance, Business, Thoughts