The agency says this mainly reflected the impact of lower Canadian stock markets on the value of Canada's international liabilities as well as the revaluation effect of a weaker Canadian dollar on international assets and liabilities.
It says Canada's international assets increased $59.3 billion to $2,574.2 billion by the end of the second quarter.
The depreciation of the Canadian dollar against most major currencies resulted in a $65.9 billion upward revaluation of foreign currency denominated international assets.
The country's international liabilities decreased $63.1 billion in the second quarter, mainly because of declines on Canadian stock markets.
However, upward revaluations of foreign currency denominated liabilities of $20 billion, as well as investment inflows from abroad, moderated the overall decrease in international liabilities.