The majority of exchange-traded funds are down for the year, but which one is the biggest loser? As of Sept. 12, 2018, the SPDR S&P 500 ETF Trust (SPY) was down 7.68% for the year, while the iShares Core S&P 500 ETF (IVV) was down 7.09%. The Vanguard FTSE All-World ex-US ETF (VEU) was down […]