Copp Clark has been a trusted name for over 180 years as Canada’s oldest continuously operating publisher. Founded in 1841 in Toronto, the company initially built its legacy in publishing before transitioning to specialize in financial data in 1981. Today, Copp Clark is globally recognized as the leading authority on holiday observances and market closures that affect financial markets worldwide.

Copp Clark brings expertise in researching, verifying, and delivering critical market holiday data.