RE:RE:margin call tomorrowInfinityorep...the link below may help...that said I would hope no one would be buying stock such as CRH on Margin although I have heard crazier stories. If there was margin buying on CRH I would assume very small unsophisticated retail investors. That alone would have minimal impact once the $3 line hit. https://www.td.com/ca/products-services/investing/td-direct-investing/accounts/margin.jsp