Arbitrage is the simultaneous purchase and sale of the same asset in different markets in order to profit from a difference in its price. Arbitrage is the practice of exploiting price differences in different markets or platforms to profit from buying and selling assets, securities, or goods.The real business lessons from 'Moneyball'. We are deep into October. Arbitrage is the act of buying and selling the same security in different markets at the same time. Arbitrage is the strategy of taking advantage of price differences in different markets for the same asset. Arbitrage involves simultaneously purchasing and selling Assets in multiple markets to take advantage of price differences and generate profits. Who needs a Business License? Anyone operating or doing business in the City of Oakland is required to file and pay an annual business tax.