This is a course in financial economics as applied to legal problems. Topics include economics of valuation (including consideration of risk and return and the capital asset pricing model), the efficient market hypothesis (theories, evidence, and limits), event studies, option theory, dividends and share repurchases, debt and leverage, and the theory of the firm. For potential transactional lawyers, the course is useful for understanding why financial transactions are structured the way they are. For potential litigators, the course is useful for understanding how finance theory is shaping modern corporate and securities law, as well as the techniques used by expert witnesses in cases involving such law. Prerequisite or co-requisite: general familiarity with corporate structure, through Corporations (L6231), or otherwise.