Catherine Casamatta

Financing and Advising: Optimal Financial Contracts with Venture Capitalists

This paper analyses the joint provision of effort by an entrepreneur and by an advisor to improve the productivity of an investment project. Without moral hazard, it is optimal that both exert effort. With moral hazard, if the entrepreneurs effort is more efficient (less costly) than the advisors effort, the latter is not hired if she does not provide funds. Outside financing arises endogenously. This paper thus provides a theory for why investors like venture capitalists are value enhancing. The optimal amount of outside financing is determined. Last, it is optimal to issue common stocks when the level of outside financing is not too large, while it is optimal to issue convertible bonds when the outside financing is large. These results are consistent with empirical evidence on venture capital.

Optimal Leverage and Aggregate Investment

We analyze the optimal financing of investment projects when managers must exert unobservable effort and can also switch to less profitable riskier ventures. Optimal financial contracts can be implemented by a combination of debt and equity when the risk-shifting problem is the most severe while stock options are also needed when the effort problem is the most severe. Worsening of the moral hazard problems leads to decreases in investment and output at the macroeconomic level. Moreover, aggregate leverage decreases with the risk-shifting problem and increases with the effort problem. Copyright The American Finance Association 1999.

Managerial Legacies, Entrenchment and Strategic Inertia

This paper argues that the legacy potential of a firms strategy is an important determinant of CEO compensation, turnover and strategy change. A legacy makes CEO replacement expensive, because firm performance can only partially be attributed to a newly employed manager. Boards may therefore optimally allow an incumbent to be entrenched. Moreover, when a firm changes strategy it is optimal to change the CEO, because the incumbent has a vested interest in seeing the new strategy fail. Even though CEOs have no specific skills in our model, it can explain the empirical association between CEO and strategy change.

The blockchain folk theorem

Blockchains are distributed ledgers, operated within peer-to-peer networks. If reliable and stable, they could offer a new, cost effective way to record transactions, but are they? We model the proof-of-work blockchain protocol as a stochastic game and analyse the equilibrium strategies of rational, strategic miners. Mining the longest chain is a Markov perfect equilibrium, without forking, in line with Nakamoto (2008). The blockchain protocol, however, is a coordination game, with multiple equilibria. There exist equilibria with forks, leading to orphaned blocks and persistent divergence between chains. We also show how forks can be generated by information delays and software upgrades. Last we identify negative externalities implying that equilibrium investment in computing capacity is excessive.

On the Role of Menus in Sequential Contracting: A Multiple Lending Example

We study a capital market in which multiple lenders sequentially attempt at financing a single borrower under moral hazard. We show that restricting lenders to post take-it-or-leave-it offers involves a severe loss of generality: none of the equilibrium outcomes arising in this scenario survives if lenders offer menus of contracts. This result challenges the approach followed in standard models of multiple lending. From a theoretical perspective, we offer new insights on equilibrium robustness in sequential common agency games.

Multiple Lenders, Strategic Default and Covenants

We study competition in capital markets subject to moral hazard when investors cannot prevent side trading. Perfect competition is impeded by entrepreneurs’ threat to borrow excessively from multiple lenders and to shirk. As a consequence, investors earn positive rents at equilibrium. We then analyze how investors’ ability to design financial contracts with covenants deals with this counterparty externality. We show that enlarging investors’ contracting opportunities generates a severe market failure: with covenants, market equilibria are indeterminate and Pareto ranked. Market outcomes are then determined by designing specific financial institutions. Information sharing systems restore efficiency but leave a positive rent to investors. A mechanism of investors-financed subsidies to entrepreneurs mitigates the threat of default and sustains the competitive allocation.