Two Harbors is a mortgage REIT that invests in two complementary assets: mortgage servicing rights (MSR) and Agency residential mortgage-backed securities (Agency RMBS). MSR represents the contractual right to service mortgage loans — collecting payments, managing escrow, and handling delinquencies — in exchange for a fee. Two Harbors owns MSR on roughly $162B in unpaid principal balance and uses its wholly owned subsidiary, RoundPoint Mortgage Servicing, to perform the day-to-day servicing. RoundPoint also subservices roughly $40B in third-party MSR and operates a small but growing direct-to-consumer origination platform. The core investment thesis is that MSR and Agency RMBS naturally offset each other: rising rates hurt RMBS values but extend MSR cash flows, while falling rates do the reverse. By pairing these two assets and hedging with interest rate derivatives, Two Harbors aims to deliver more stable book value than a pure RMBS portfolio. Two Harbors earns returns through servicing fees, float income on escrow balances, and spread income on Agency RMBS financed via short-term repo. Both assets are marked to market, making book value sensitive to interest rate moves, prepayment speeds, and mortgage spreads. Two Harbors has been building a vertically integrated mortgage platform, culminating in an announced all-stock merger with UWM, the largest U.S. mortgage originator, which would roughly double the combined MSR portfolio to approximately $400B UPB and add a high-volume origination engine to the platform.