State Street SPDR Portfolio Mortgage Backed Bond ETF (SPMB) 주가, 시세, 뉴스 및 이력 | Benzinga

In seeking to track the performance of the Bloomberg U.S. MBS Index (the Index), the Fund employs a sampling strategy, which means that the Fund is not required to purchase all of the securities represented in the Index. Instead, the Fund may purchase a subset of the securities in the Index in an effort to hold a portfolio of securities with generally the same risk and return characteristics of the Index. The quantity of holdings in the Fund will be based on a number of factors, including asset size of the Fund.