This dissertation is composed of three essays that measure the impact of monetary policy on non-bank credit activity by issuer, composition, and duration. The first essay measures the dynamic impact of monetary policy on gross repurchase agreement activity of primary government dealers of the Federal Reserve System. The second essay measures the dynamic impact of monetary policy on commercial paper activity. The third essay measures the impact of monetary policy on issuers of asset-backed securities. In the first essay, we find a positive shock to the federal funds rate significantly affects the level of credit activity. In particular, repo arrangements longer than a day display persistent declines. By comparison, overnight financing increa...