We performed a screening of large-cap ETFs - defined as having Assets Under Management (AUM) over $10 billion - to determine what funds had the largest positive and negative returns on the week, according to data from etfdb.com. Only non-leveraged funds were considered. Winners Energy Select Sector SPDR Fund (NYSEARCA: XLE) XLE is up 3.50% over the trailing week. The Energy Select Sector SPDR Fund provides exposure to companies in the oil, gas and consumable fuel, energy equipment and services i