 What does the term "margin stock" mean?
Use the proceeds of any Loan or Letter of Credit, whether directly or indirectly, and whether immediately, incidentally or ultimately, to purchase or carry margin stock (within the meaning of Regulation U of the FRB) or to extend credit to others for the purpose of purchasing or carrying margin stock or to refund indebtedness originally incurred for such purpose.
Regulation U of the FRB