In the United States, a cross is where a broker acts for both the buyer and seller of a security in the same deal. This is also known as an agency cross or dual agency. In the United Kingdom it is known as a put through. Cross can also refer to the practice, usually illegal, where buying and selling orders for a security are offset by a broker without being recorded as a trade on the exchange. The risk is that either the buyer or the seller will not receive the fair market price.