Abstract In 2007, as American housing markets started to decline, the government-sponsored enterprises dramatically increased their acquisitions of low FICO and high loan-to-value mortgages. By 2008, the agencies had reversed course by decreasing their high-risk acquisitions. I develop a theory in which large lenders temporarily increase high-risk activity at the end of a boom. In the model, lenders with many outstanding mortgages have incentives to extend risky credit to prop up house prices. The increase in house prices lessens the losses they make on their outstanding portfolio of mortgages. As the bust continues, lenders slowly wind down their mortgage exposure.

Abstract We show that socially responsible investors can have a negative impact by slowing the pace of firm reform. Investors with broad prosocial preferences value acquiring dirty firms with high negative production externalities because they can reform these firms. The anticipation of trading gains for dirty firms decreases the incentive of current firm owners to reduce externalities proactively, potentially causing delay in reform. The presence of financial investors—alongside socially responsible investors—can exacerbate delay. Investment mandates through which socially responsible investors commit to paying a premium for green firms can incentivize reform in a timely manner.

ABSTRACT We show that utility tokens can limit the rent‐seeking activities of two‐sided platforms with market power while preserving efficiency gains due to network effects. We model platforms where buyers and sellers can meet to exchange services. Tokens serve as the sole medium of exchange on a platform and can be traded in a secondary market. Tokenizing a platform commits a firm to give up monopolistic rents associated with the control of the platform, leading to long‐run competitive prices. We show how the threat of entrants can incentivize developers to tokenize and discuss cases where regulation is needed to enforce tokenization.