If the loans exceed 30% of their financing, it is not permissible to buy their stocks.

If you don’t know whether it is shariah complaint or not, you shouldn’t buy them.

Is it halal to invest in a stock of a telecom/pharma/textile etc. company, which possess normal bank loans and pay interest to banks? Is it halal to invest in Islamic bank Bangladesh stocks or bonds, where they are claiming themselves as fully shariah compliant but we actually don’t know their situation?