Simple Tests of PSP as Diversifier
May 29, 2013 - Strategic Allocation
Does adding a proxy for private equity to a diversified portfolio improve its performance? To check, we add PowerShares Global Listed Private Equity (PSP) to the following mix of asset class proxies (the same used in “Simple Asset Class ETF Momentum Strategy”):
PowerShares DB Commodity Index Tracking (DBC)
iShares MSCI Emerging Markets Index (EEM)
iShares MSCI EAFE Index (EFA)
SPDR Gold Shares (GLD)
iShares Russell 1000 Index (IWB)
iShares Russell 2000 Index (IWM)
SPDR Dow Jones REIT (RWR)
iShares Barclays 20+ Year Treasury Bond (TLT)
3-month Treasury bills (Cash)
First, per the findings of “Asset Class Diversification Effectiveness Factors”, we measure the average monthly return for PSP and the average pairwise correlation of PSP monthly returns with the monthly returns of the above assets. Then, we compare cumulative returns and basic monthly return statistics for equally weighted (EW), monthly rebalanced portfolios with and without PSP. We ignore rebalancing frictions, which would be about the same for the alternative portfolios. Using adjusted monthly returns for PSP and the above nine asset class proxies from November 2006 (first return available for PSP) through April 2013 (78 monthly returns), we find that: Keep Reading