Calvert Core Bond Fund Class I 

This fund typically allocates at least 80% of its net assets to high-quality, U.S. dollar-denominated fixed-income securities, based on their rating at the time of purchase. A small portion, specifically up to 5% of its net assets, may be invested in higher-risk debt instruments that are below investment grade, commonly known as "junk bonds," which can include those in default or experiencing financial distress. Furthermore, the fund has the flexibility to commit up to 25% of its net assets to international debt securities and American Depositary Receipts (ADRs), provided these are also denominated in U.S. dollars.