Since the US sk market crashed on October 19, 1987, many studies have been conducted to learn from this experience in the hopes of avoiding a similarly adverse future fall. The book, originally published as a special issue of the Journal of Financial Services Research, considers some of the important policy adjustments that have been implemented in the wake of the 1987 crash. Taken separately and together, these five papers offer a synthesis and summary of the most important policy innovations that have evolved since the largest single-day decline in sk market history.