These are the Penson offices in Canada
Montreal- 360 St. Jacques West, 11th Floor Montreal, Quebec H2Y 1P5
Toronto- 330 Bay Street, Suite 711 Toronto, Ontario M5H 2S8
Calgary- 638-11th Avenue SW, Suite 200 Calgary, Alberta T2R 0E2
Vancouver- 666 Burrard Street, Suite 500, Park Place Vancouver, BC V6C 3P6
I wonder what office they do their trading out of.