The U.S. remains Canada's largest foreign investor and the most popular destination for Canadian foreign investments.  In 2018, the stock of U.S. direct investment in Canada totaled $406 billion, while the stock of Canadian investment in the U.S. totaled $595 billion, or 46% of the overall CDIA stock for 2018. This made Canada the second largest investing country in the U.S. for 2018 US investments are primarily directed at Canada's mining and smelting industries, petroleum, chemicals, the manufacture of machinery and transportation equipment, and finance, while Canadian investment in the United States is concentrated in manufacturing, wholesale trade, real estate, petroleum, finance, and insurance and other services.