Here is what you need to know.Here's what Wall Street is predicting for 2018.Almost no one is bearish, as Oppenheimer's John Stoltzfus and JPMorgan'sDubravko Lakos-Bujas are the most optimistic with year-end 2018 S&P 500 price targets of 3,000.Tech will sound the alarm on the next big bubble.The best way to spot the next big market bubble is to pay attention thedivergence between tech stocks and tech companies with high-yield credit ratings, according to Bank of America Merrill Lynch.Home prices in China keep falling.New home prices grew by 5.1% over the year, down from 5.4% in the 12 months to October, asBeijing, Shanghai, Tianjin and Shenzhen all saw declines from a year earlier, National Bureau of Statistics data showed.CME Group launches bitcoin futures.Bitcoin futures trading got off to an uneventful start at the CME, with light trading volumes in the opening hours.Bitcoin gets close to 20,000.The cryptocurrency hit a high of $19,843 a coin before paring its gains. It's currently little changed at $19,034, according to Markets Insider data.Oracle agrees to buy Australia's Aconex.Oracle has agreed to pay $1.19 billion for the Australianweb-based project management software company, Reuters says.Hershey is closing in on a deal to buy the maker of SkinnyPop.Hershey is close to buying SkinnyPop maker Amplify for $1.6 billion, or $12 a share, according to CNBC.Power has been restored after more than 1,000 flights grounded at the world's busiest airport.Atlanta'sHartsfield-Jackson International Airport power has been restored aftera fire in an underground electrical facility caused more than 1,000 flights to be grounded, AP says.Stock markets around the world are gaining ground.Japan's Nikkei (+1.55%) led the advance in Asia and Germany's DAX (+1.43%) is out front in Europe. The S&P 500 is set to open higher by 0.50% near 2,689.US economic data trickles out.NAHB home prices will be released at 10 a.m. ET. The US 10-year yield is up 2 basis points at 2.37%.Join the conversation about this story Click here to read full news..