A Q-Theory of Banks Staff Working Paper 2021-44 Juliane Beganau, Saki Bigio, Jeremy Majerovitz, Matías Vieyra Using stock market data on banks, we show that the book value of loans recognizes losses with a delay. This delayed accounting is important for regulation because the requirements regulators impose are based on book values. Content Type(s): Staff research, Staff working papers Topic(s): Financial institutions, Financial stability, Financial system regulation and policies JEL Code(s): E, E4, E44, G, G2, G21, G3, G32, G33