Inside high-frequency trading’s technological arms race

Over the past decade, the U.S. government has imposed a series of rule changes on the structure of the country’s financial system. Markets that once moved at the speed of, well, humans now process transactions at speeds that are unfathomable to most of us. An entire, massive financial universe has formed in these flashes of time, just below the surface of everyday markets. It’s called high-frequency trading. (The Kernel)