MBSX actively invests in mortgage-backed securities (MBS), focusing on fixed rate agency residential MBS issued by government-sponsored entities, considered investment grade. Cash awaiting investment may be held in short-term investment vehicles like US government and agency securities, investment grade money market instruments, and equivalents. The fund invests in securities regardless of maturity or duration. The funds advisor seeks advantageous risk-return profiles, using bottom-up analysis of collateral and capital structures to identify value investments and trading opportunities.