AGNC Investment Is Joining the S&P MidCap 400 Index. Here's What That Means for Its 14%+ Yield.

AGNC Investment, a mortgage REIT, joined the S&P MidCap 400 Index on September 21, 2026. While index inclusion will increase institutional ownership through passive funds and ETFs, it won't directly impact the REIT's monthly dividend of $0.12 per share. The company's 14.6% yield reflects a 20% share price decline this year due to rising interest rates. AGNC's dividend sustainability depends on maintaining returns above its cost of capital, currently in the 15-17% range.