[Hassett's probability of becoming Fed Chair drops to 42%, Walsh rises to 31%] On December 28, Polymarket data showed that the probability of National Economic Council Director Hassett becoming the next Federal Reserve Chair dropped to 42%, while Walsh's probability rose to 31%, and Waller's probability stood at 12%. According to CNBC, sources familiar with the matter revealed that U.S. President Trump may appoint a new Federal Reserve Chair in the first week of January next year.