The third, most controversial form of computer-driven trading is ironically the one that should make markets more efficient. These models remorselessly comb the markets for arbitrage opportunities.

• 第三，讽刺地是，最有争议的计算机驱动交易形式恰恰是可提高市场效率的形式。这些模型无情地扫荡市场的套利机会。