Strategy. The principal strategies of the Portfolio are to invest in investment-grade corporate bonds, government bonds, asset-backed securities, mortgage-backed securities, and other types of debt securities. Asset-backed securities are securities backed by notes or receivables originated by banks, credit card companies or other providers of credit. The Portfolio may invest in foreign securities, including those of issuers in emerging markets. An emerging market country is any country determined by the Adviser to have an emerging market economy, considering factors such as the countrys credit rating, its political and economic stability and the development of its financial and capital markets. Under normal conditions, the Portfolio invests at least 65% of the Portfolios assets in investment-grade debt securities or preferred stock. At the … Show more… The principal strategies of the Portfolio are to invest in investment-grade corporate bonds, government bonds, asset-backed securities, mortgage-backed securities, and other types of debt securities. Asset-backed securities are securities backed by notes or receivables originated by banks, credit card companies or other providers of credit. The Portfolio may invest in foreign securities, including those of issuers in emerging markets. An emerging market country is any country determined by the Adviser to have an emerging market economy, considering factors such as the countrys credit rating, its political and economic stability and the development of its financial and capital markets. Under normal conditions, the Portfolio invests at least 65% of the Portfolios assets in investment-grade debt securities or preferred stock. At the time of purchase, these investment-grade securities are rated at or above BBB- by S&P, or Baa3 by Moodys, or unrated but considered to be of comparable quality by the Adviser. When the ratings from the two agencies are different, the lower is used. In cases where explicit bond level ratings may not be available, the Adviser may use other sources to classify securities by credit quality. The Portfolio may also invest in high-yield, high-risk bonds, notes, debentures and other debt obligations or preferred stock commonly known as junk bonds. At the time of purchase these securities are rated within or below the BB major rating category by S&P or the Ba major rating category by Moodys or are unrated but considered to be of comparable quality by the Adviser. The Adviser uses fundamental and other investment research techniques to determine which debt obligations to buy and sell. Fundamental techniques assess a securitys value based on factors such as an issuers financial profile, management, and business prospects, as applicable. The Adviser may purchase bonds of any maturity and generally focuses on U.S. companies that it believes are financially sound and have strong cash flow, asset values and interest or dividend earnings. The Adviser purchases bonds of foreign issuers as well. The Portfolio utilizes derivatives primarily in the form of U.S. Treasury futures contracts in order to manage the Portfolios duration, or interest rate risk. The Portfolio may enter into derivatives contracts traded on exchanges or in the over the counter market. The Portfolio may invest in securities of any market sector and may hold a significant amount of securities of companies, from time to time, within a single sector such as financials. Show less