Mortgage REITs are fundamentally leveraged fixed income vehicles — they borrow short-term and invest in longer-duration mortgage-backed securities, earning the spread between the two. That spread is the business, and when the yield curve inverts or flattens significantly, the entire economic basis for the model is compressed. Interest rate sensitivity is the primary risk, and it works against mREITs in both directions: rising rates reduce the market value of their mortgage security portfolios while increasing borrowing costs, potentially faster than assets reprice. Leverage amplifies both gains and losses, and during periods of market stress, margin calls on financing facilities can force asset sales at distressed prices, crystallizing losses. Agency mREITs that invest only in government-guaranteed mortgages carry no credit risk but are fully exposed to rate and prepayment risk. Non-agency mREITs carry credit exposure but sometimes offer higher spreads. For investors, mortgage REITs are complex instruments that offer attractive headline yields but carry meaningful risks from rate sensitivity, leverage and liquidity that require understanding the specific portfolio positioning before committing capital.
