Today, the majority of U.S. citizens trade stocks online through brokers like AmeriTrade, Fidelity, and Scottrade. And for the most part, these brokers won't allow Americans to trade Canadian stocks. If a Canadian company has a U.S. listing, then buying and selling it are no problem. While most all Canadian brokers allow us access to all the US stocks, the of TD Ameritrade though I haven't tried to create a Canadian brokerage account. The OTC market is also helpful for people who want to know, “How can I buy Canadian stocks on TD Ameritrade?” TD Ameritrade uses a five-.