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Summary The Vanguard Short-Term Corporate Bond Index ETF is everything I would hope for in a short-term corporate debt exposure. The ETF has low volatility and low correlation with other important investments. The credit quality is respectable without being so high that it eliminates most of the yield. Using this fund as part of a diversified portfolio makes it shine. The Vanguard Short-Term Corporate Bond Index ETF (NASDAQ: VCSH ) is simply a great fund. I wish I could start more articles out with comments that are this positive. This fund is simply great. The yields are severely limited since this is short term debt with respectable credit quality, but the ETF on the whole is just exceptional when it comes to being part of an effective portfolio. Credit The following chart shows the credit quality breakdown. When it comes to a corporate bond fund there are two ways that I like to see the weightings. Either I would want a junk bond fund or I would want one with a credit breakdown similar to this. Personally, favor combining a fund like this with quite a few other bond funds to create a more complex group of bond holdings. Duration The following chart breaks down the duration of the funds. Holdings are almost all less than 5 years and usually more than 1 year. Again, this is a solid choice. If an investor wants to load up on even shorter term bonds, there are funds designed specifically for that. It is difficult to find a useful yield level on those ultra-short bonds so this is a reasonable portfolio composition. Sector The following chart breaks down the sector allocation: This sector allocation may seem absurd if an investor looks at numbers without reading the names. The names of the sectors indicate that rather than breaking down the market into all the corporate sectors, Vanguard is containing several other bond sectors that are not relevant to corporate debt. It wouldn’t make sense for this fund to have an allocation to foreign debt issues or MBS. My hypothetical portfolio, shown lower in the article, picks up those allocations through other ETFs. A Hypothetical Portfolio I put together a very simple sample portfolio using Invest Spy. Due to some of the ETFs being newer the sample period is limited to a little over two years. (click to enlarge) This hypothetical portfolio is weighted to 60% equity and 40% bonds. To break that down the weights from the equity section are 30% total market index (NYSEARCA: VTI ), 10% equity REITs (NYSEARCA: VNQ ), 5% Utilities, 5% Consumer Staples (NYSEARCA: VDC ), 10% International Equity. The bond section is holding 10% in junk bonds (NYSEARCA: JNK ), 5% in extended duration treasuries (NYSEARCA: EDV ), 5% in emerging market government bonds (NASDAQ: VWOB ), 5% short term corporate debt , 5% in short term government debt (NASDAQ: VGSH ), 5% in mortgage backed securities (NASDAQ: VMBS ), and 5% in intermediate-term corporate bonds (NYSEARCA: BIV ). This portfolio won’t be perfect for hitting the efficient frontier, but it should beat the vast majority of real portfolios investors are using on a risk adjusted basis. If long term rates were higher I would have used a higher weighting for long duration bonds due to their exceptionally correlation to major equity classes. My disclosure already states it, but I’ll reiterate that I am long VTI and VNQ. Annualized Volatility When measuring risk adjusted returns for a portfolio the most efficient method is usually to use the Sharpe ratio. For that ratio we are taking the total return annualized return and subtracting the risk free rate. Then we divide the resulting number by the annualized volatility. The problem is that this metric is only really known after the fact. Predicting the level of returns in advance is problematic but correlations and relative volatility are more reliable over time than returns. Within the chart investors can see the annualized volatility of each holding as well as the resulting annualized volatility for the portfolio. While some holdings have higher annualized volatility scores, such as EDV, the ETF makes up for that by having negative correlation to a few of the equity holdings. As a result, the ETF only contributes .6% of the total risk in the portfolio. VCSH has an annualized volatility of 1.8%, which is not bad at all. Once we adjust for correlation the risk contribution is extremely low. That means VCSH fits extremely well in this kind of hypothetical portfolio. The expected returns are not going to be very strong since this is short term corporate debt, but for an investor trying to achieve superior risk adjusted returns relative to the SPDR S&P 500 Trust ETF ( SPY), this is a great holding. It will usually underperform SPY, but it will result in material reduction in total portfolio risk. Correlation I want to dive a little deeper into the correlation statistics. The table below provides the correlation across each of those ETFs which should make it very quick to see which ones are work very well together. When a correlation is shown in the tan color it indicates a negative correlation which is very attractive for reaching the efficient frontier. You’ll notice that quite a few of the bond funds have negative correlations to VTI and the S&P 500. Since VTI and SPY have a correlation ranging between 99% and 99.9% depending on the measurement period, it should not be surprising that those two funds have very similar correlations to other holdings. Here is the correlation table: (click to enlarge) Conclusion When the ETF is placed within the context of a portfolio that is heavy on U.S. equities it looks like an intelligent way to reduce the overall risk of the portfolio. When it comes to generating alpha, I’ve often told investors that the secret to reaching alpha is to focus on reducing risk. Most other investors are already focused on trying to maximize their returns and many will take on more risk than they can handle. Focusing on risk reduction reduces the incentives for an investor to sell off after a big loss and makes it easier to generate alpha relative to the S&P 500 because it is easier to reduce risk through superior diversification. Disclosure: I am/we are long VTI, VNQ. (More…) I wrote this article myself, and it expresses my own opinions. I am not receiving compensation for it (other than from Seeking Alpha). I have no business relationship with any company whose stock is mentioned in this article. Additional disclosure: Information in this article represents the opinion of the analyst. All statements are represented as opinions, rather than facts, and should not be construed as advice to buy or sell a security. Ratings of “outperform” and “underperform” reflect the analyst’s estimation of a divergence between the market value for a security and the price that would be appropriate given the potential for risks and returns relative to other securities. The analyst does not know your particular objectives for returns or constraints upon investing. All investors are encouraged to do their own research before making any investment decision. Information is regularly obtained from Yahoo Finance, Google Finance, and SEC Database. If Yahoo, Google, or the SEC database contained faulty or old information it could be incorporated into my analysis. Scalper1 News
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