Defense Procurement Fraud, Penalties, and Contractor Influence
研究发现，军事采购欺诈调查会显著降低涉事企业股价，但顶级国防承包商受罚较轻，市场价值和政府收入损失较小，而小型承包商则遭受重罚。
Press reports of investigations of fraud, indictments, and suspensions in military procurement are associated with significantly negative average abnormal returns in the stocks of affected firms. Abnormal stock returns are significantly less negative, however, for firms ranking among the top 100 defense contractors than for unranked contractors, even after one controls for firm size, the frauds' characteristics, and the firm's recidivism. Unranked contractors are penalized heavily for procurment frauds, experiencing both a decline in market value and a subsequent loss in government‐derived revenues. Furthermore, these losses are related to the percentage of the firm's revenues that derive from government contracts. Influential contractors, in contrast, are penalized lightly, experiencing negligible changes in share value and government contract revenue.