AGNC Investment Corp. to Join the S&P MidCap 400 Index
AGNC Investment Corp. (AGNC) will join the S&P MidCap 400 Index on September 21, 2026, as part of the quarterly rebalance. The company is a leading investor in Agency residential mortgage-backed securities, focusing on yield-driven total returns. This inclusion is seen as a milestone for AGNC, reflecting its scale and history.




