The act of buying and selling goods simultaneously in different markets to gain an immediate profit. Impressive, but tricky.The simultaneous purchase and sale of the same securities, commodities, or foreign exchange in different markets to profit from unequal prices. Arbitrage is the simultaneous purchase and sale of the same asset in different markets in order to profit from a difference in its price. The regulatory process, with a focus on the Federal Register system and the public's role in the development of regulations. 2. He has frequently received the award for best teacher in the department of economics. California State Library, Sacramento. In doing so, stabilization would.