Wilson, John, and Francis Coleman. "Faith or Finance: Impact of Principled Purchasing on CBIS Fund Performance", Christian Brothers Investment Service, 1999.

CBIS, a firm specializing in investing for Catholic organizations, reviews the performance of its pooled funds to identify the impact of social screens on their risk and performance for the 1995-1998 time period. Finds that screens "had minimal impact on the returns of our pooled funds over the period of study," and that "the risk profile of the funds was not significantly different from comparable portfolios that did not use social restrictions." A small negative performance impact was found to be attributable to the contraception screen, however.