SIFI actively and primarily invests in fixed income instruments and derivatives of any maturity including credit default swaps, US. Treasurys, and other ETFs to manage exposure. The fund may also hold emerging market bonds and have an emphasis on high-yield corporate bonds. In seeking to minimize risk and gain total return, the subadviser utilizes proprietary quantitative models to create investment recommendations in the security selection, and back-tests each hypothesis using historical market data which involves research parameters, internal peer review, and several analyses including a companys strength, outlook, and credit spreads. Market timing insights are also assessed in determining the attractiveness of corporate credit versus interest rate markets. The fund holds both investment-grade and below investment-grade bonds. SIFI is part of Harbors Scientific Alpha suite along with its sibling fund, SIHY which, on the other hand, offers a high-yield US fixed income exposure.