|Source: Kiplingers March 2011 p. 29|
On the risk front, it is worth noting that in 2008 the fund was down more than 16%. You can see this by going to Morningstar and typing in the symbol and then clicking the "performance" tab. Also, the fund has a redemption fee if redeemed within 60 days, and there is a minimum investment. I would limit investment exposure in this particular asset class to 5% of total investable assets.
Disclosure: This information is for educational purposes only. Investors should do their own research or consult with an advisor before making investment decisions.