The Canadian dollar was down nearly half a U.S. cent and the price of oil was down sharply as North American stock markets prepared to open for the first time since the Greek referendum raised fresh questions about the euro currency union.

The loonie traded at 79.16 cents US, down 0.46 of a U.S. cent from Friday’s close.

On the commodity markets, the August crude contract dropped $2.70 to US$54.23 a barrel and the August gold contract rose 50 cents to US$1,164.00 an ounce.

The Dow Jones industrial futures were down 169.0 points at 17,480.0, the Nasdaq futures fell 41.8 points to 4,387.0, and the S&P 500 futures fell 20 points to 2,048.8.

The Toronto Stock Exchange’s S&P/TSX composite index close at 14,682.39 on Friday, after rising 44.40 points while U.S. stock markets were closed for a holiday.

On Sunday, more than 61% of Greeks voted “no” to budget cuts the country’s creditors had proposed in return for rescue loans the country needs – even though those proposals were no longer on the table.

Greece and its creditors meet again Tuesday to discuss how to keep the country in the euro, but the two sides remain far apart on key issues, particularly the notion of debt relief.