To wrap up fixed income, he suggests the use of iShares S&P Citigroup International Treasury (IGOV).
In regard to real assets, Nusbaum suggests utilizing the WisdomTree International Real Estate ETF (DRW) the SPDR Gold Trust (GLD) and the PowerShares DB Agriculture Fund (DBA). Additionally, he suggests gaining exposure to infrastructure through the iShares S&P Global Infrastructure Fund (IGF).
Lastly, he states that one should allocate 8% to special opportunities like the PowerShares Water Portfolio (PHO).
In addition to this, we suggest that one utilize a strategy when investing, such as monitoring market trends using the 200-day moving average. More on the trend following strategy can be found in our new book.
For more stories on portfolio construction and the use of ETFs, visit our ETF education category.
Kevin Grewal contributed to this article.