The SPDR Gold Shares ETF (GLD) has attracted $11.8 billion of inflows this year, more than any other ETF, as gold has popped 26 percent in 2016. Dave Mazza, head of mutual fund and ETF research at State Street Global Advisors (STT) , does not expect the fund flows to stop following the yellow metal's brilliant performance anytime soon. 'Gold will continue to attract assets as the political campaign heats up and central banks potentially take action in the U.S., Europe and Japan,' said Mazza. 'Real estate is no longer buried in the financial sector,' said Mazza. 'It's an attractive place for investors to find income in this low yield environment and now that it is more visible it will become increasingly attractive with retail investors.' Finally, Mazza said investors should consider buying the SPDR DoubleLine Total Return Tactical ETF (TOTL) , which is up three percent so far in 2016. Less than two years after its launch, TOTL has become one the largest actively managed ETFs with $2.8 billion in assets. And Mazza is recommending the ETF even though DoubleLine founder and current bond king Jeff Gundlach has recently become more bearish on bonds.