The federal agency says Canadian investment in foreign securities rose to $5.7 billion, the largest investment since November 2012.
Foreigners bought $3.3 billion in corporate bonds in August, while reducing their holdings of government bonds by $1.2 billion.
Meanwhile, Statistics Canada says that between January and August, foreign investors reduced their holdings of Canadian government bonds by $2.4 billion, compared with an acquisition of $28.7 billion for the same period in 2012.
Foreign investors sold a net $2.2 billion of Canadian equities in August, following four straight months of purchases that totalled $8.2 billion.
On a sector basis, pharmaceutical, energy, gold and resource shares accounted for the bulk of the divestment.