Strategy. Under normal conditions, the Fund invests at least 80% of its net assets in bonds of issuers located throughout the world (including emerging markets) that the Funds investment adviser believes demonstrate sustainable characteristics. The Fund typically invests in corporate bonds, US and foreign government bonds, municipal bonds, collateralized or securitized bonds, high quality commercial paper, and bank obligations. For purposes of this investment policy, the adviser considers issuers with sustainable characteristics to be those issuers that are more established, consistently profitable, financially strong, and with robust policies in the areas of the environment, social responsibility, and corporate governance. The adviser employs a fundamental research driven approach to bond selection and portfolio construction. The advisers focus on sustainability considers financial and … Show more… Under normal conditions, the Fund invests at least 80% of its net assets in bonds of issuers located throughout the world (including emerging markets) that the Funds investment adviser believes demonstrate sustainable characteristics. The Fund typically invests in corporate bonds, US and foreign government bonds, municipal bonds, collateralized or securitized bonds, high quality commercial paper, and bank obligations. For purposes of this investment policy, the adviser considers issuers with sustainable characteristics to be those issuers that are more established, consistently profitable, financially strong, and with robust policies in the areas of the environment, social responsibility, and corporate governance. The adviser employs a fundamental research driven approach to bond selection and portfolio construction. The advisers focus on sustainability considers financial and nonfinancial characteristics from diverse sources including regulatory filings, market data, and data supplied by third-party vendors. The adviser uses that information to identify issuers with strong balance sheets, capable management teams with a track record of success, good cash flow, prospects for sustainable above-average earnings growth, and to assess issuers business models, over the long term. The adviser employs a sustainable rating system based on its own, as well as third-party, data to identify issuers believed to have robust policies and lower risks in the areas of the environment, social responsibility, and corporate governance. The use of third- party data does not include third-party environmental, social, or governance ("ESG") ratings or criteria established by third parties for third-party ratings. The advisers proprietary scoring system assesses how well a company performs relative to a blend of its industry, sector, and country peers. In addition to the financial considerations discussed above, the adviser considers sustainability practices such as carbon emissions, water usage, renewable energy, and fair labor and supply chain practices. The Funds sustainability evaluation process considers risks and opportunities holistically, meaning an issuer will not necessarily be excluded from investment due to any one particular factor if the overall analysis results in a favorable evaluation by the adviser. The adviser also uses negative screening to exclude companies primarily engaged in higher sustainability risk businesses such as alcohol, tobacco, pornography, weapons, gambling, and companies in the business of fossil fuel extraction, production, or refining. The Fund generally does not invest in any company with exposure to the foregoing businesses, but may invest in a company if the company is not primarily engaged in higher sustainability risk businesses or, in in the opinion of the adviser, sustainability risks are mitigated by other factors. Show less