What is Centurylink 400 ETF? The Centurylink 400 ETF (NYSEARCA:CTL) is a U.S.-based exchange-traded fund that invests in stocks of companies included in the S&P 400 Index. The fund has $1.5 billion in assets and charges 0.25% in annual fees. The S&P 400 Index is a capitalization-weighted index that tracks the performance of stocks of […]