Market Integrity and Surveillance Effort

Maintaining and enhancing market integrity is a central objective of exchanges worldwide. However, there is relatively little research examining the efforts of exchanges in achieving this objective. Using unique data, this paper presents evidence on Australian Stock Exchange surveillance effort and the characteristics of alleged market manipulation. The evidence reveals significant and enhanced surveillance effort over time. Significant changes in the characteristics of alleged manipulation are also evident. Analysis of these changes indicates improved integrity outcomes in areas of persistent and targeted Surveillance effort