PennyMac Mortgage Investment Trust, through its subsidiary, primarily invests in residential mortgage-related assets in the United States. The company operates through: Credit Sensitive Strategies, Interest Rate Sensitive Strategies, Correspondent Production segments. The Credit Sensitive Strategies segment invests in credit risk transfer (CRT) agreements and subordinate mortgage-backed securities (MBS). The Interest Rate Sensitive Strategies segment engages in investing in mortgage servicing rights, base servicing and excess servicing spreads, and agency and senior non-agency MBS, as well as related interest rate hedging activities.