Vanguard Mortgage-Backed Securities Index Fund Admiral Shares (VMBSX) primarily invests in a diversified portfolio of mortgage-backed securities (MBS), primarily issued by government-sponsored enterprises (GSEs) such as Fannie Mae and Freddie Mac. The fund's competitive position is bolstered by Vanguard's low-cost investment structure and its extensive research capabilities, which help in managing interest rate risk effectively.
Financial ServicesAsset Managementlow - The fund's operating costs are primarily variable, tied to management fees, which scale with assets under management.