This replication package contains the necessary codes to reproduce the figures and tables in "A Q-theory of Banks" by Juliane Begenau, Saki Bigio, Jeremy Majerovitz, and Matias Vieyra to be published in the Review of Economic Studies. Two folders, Empirical and Model, each contain a readme file with the steps needed to run the code within each folder. The Empirical folder also contains only publicly available data or pseudo-data (randomly generated from the restricted data).