One of the hottest trades of the year is showing signs of cracking By: CNBC.com News December 18, 2017 at 13:48 PM EST Emerging markets have been one of the year's hottest trades, but there are tailwinds appearing that could derail their rally. Read More >> Related Stocks: Alibaba Group Holding Ltd Boeing Co Emrg Mkts Ishares MSCI ETF Sina Corp