Bankers' compensation systems, as well as the growing housing bubble and the rising popularity of derivative instruments, were blamed for causing the 2007-2009 financial crisis. However several aspects of the accounting and regulatory systems have also been called into question and are analyzed in this thesis. The first essay evaluate how investors react when banks make accounting choices and manage risk in an integrated fashion. More specifïcally, we examine how banks' discrétion on accounting valuation and risk-weight reporting for investment securities under Basel rules impacts information asymmetry. We find that banks face higher information asymmetry when holding low risk-weighted securities under the most flexible accounting valuation...