2015’s top-performing assets around the world By: CNBC.com News December 24, 2015 at 01:56 AM EST With just a few days left of the year, here’s a look at which assets performed well in 2015 and which were best avoided. Read More >> Related Stocks: FTSE 100 Index PowerShares QQQ S&P 500 Ishares Core ETF SPDR S&P 500 ETF Trust