BOSTON--(BUSINESS WIRE)--Columbia Threadneedle Investments today is celebrating Columbia EM Core ex-China ETF (NYSE Arca: XCEM) reaching its 10-year anniversary. Launched in 2015, XCEM was the first- ever broad-based emerging markets ETF to exclude exposure to China. Rated as a four-star fund by Morningstar, it has delivered stronger historical returns than broad emerging market benchmarks for a decade. XCEM—the oldest ETF in its EM ex-China category—has established itself as a cornerstone for i. ...