Rau (2000)

Citation: Rau, P. R. (2000). “Investment Bank Market Share, Contingent Fee Payments, and the Performance of Acquiring Firms.” Journal of Financial Economics.

Rau (2000) studies how investment bank incentives relate to M&A outcomes. The paper focuses on two connected questions: (1) how often are advisory fees contingent on deal completion, and (2) does that structure affect the performance of acquiring firms?

The study examines large samples of mergers and acquisitions and the advisors involved. It documents that advisory compensation in M&A is overwhelmingly contingent—banks are paid primarily when the deal closes. This creates a plausible incentive for banks to favor completion rather than long‑term value creation.

Rau explores whether this incentive is visible in outcomes. The paper’s empirical analysis relates advisors’ market share and compensation structure to post‑merger performance measures. The central concern is that completion‑based fees may lead advisors to push marginal deals or to be less critical in evaluating acquisition quality.

The results are consistent with the possibility of a completion bias. The paper finds patterns suggesting that acquirers advised by banks with higher market share and stronger completion incentives exhibit weaker long‑term performance on average. The interpretation is not that bankers “cause” bad deals in a simple sense, but that fee structures may tilt advisor behavior toward closing transactions even when quality is marginal.

The paper does not claim that all advisors are equally biased or that advisors are the sole driver of poor M&A outcomes. It recognizes that acquirers and their managers have their own incentives (such as empire‑building), and that advisors may be responding to client preferences. The contribution is to provide evidence that contingent fee structures correlate with performance, raising questions about the alignment between advisor incentives and shareholder value.

A key strength of the paper is that it treats advisory incentives as an economic variable rather than an assumed constant. It shows that the form of compensation in investment banking can have observable consequences in markets and should be taken seriously in governance analysis.

The work also helped spark later research that investigated reputation effects and advisor heterogeneity. Subsequent studies have debated whether top‑tier advisors add value or whether selection effects explain the results. In this sense, Rau (2000) is best seen as an early empirical warning that compensation structure matters and may create conflicts, rather than a definitive claim that all advisors destroy value.

Contingent advisory fees in M&A are pervasive, and the evidence is consistent with a completion‑bias effect on acquirer performance. Compensation structure shapes intermediary behavior—the question is how much reputation and advisor quality offset the bias.