Thank you for the email. Opening transactions for this security are currently barred from being placed online. Clients can still buy or sell over the phone with a broker, at the online commission rate. To protect client interests, TD Ameritrade has systems and processes to monitor trading patterns and identify suspicious activity. Some securities are more vulnerable to manipulation than others. By requiring opening trades to be placed by a broker, we are able to more accurately verify client identity and intent. In this way, we can protect client assets and help ensure the integrity of the marketplace. We do apologize for the inconvenience. I hope this helps explain. Thank you.