The Value of Judicial Independence: Evidence from 18th Century England

This paper assesses the impact of changes in judicial independence on equity markets. North and Weingast (1989) argue that judicial independence and other institutional changes inaugurated by the Glorious Revolution of 1688-89 improved public and private finance in England by putting restraints on the government. We calculate abnormal equity returns at critical points in the passage of statutes giving judges greater security of tenure and higher salaries. Early eighteenth-century legislation granting tenure during good behavior is associated with large and statistically significant positive abnormal returns. Other statutes had positive but generally insignificant effects.