Analysis - T Rowe Price, others peer into Virtu's high-frequency world

By Herbert Lash NEW YORK (Reuters) - Asset management firm T. Rowe Price Group conducted a trade last year as an experiment that a top trader at the firm said underscored the shortcomings of a U.S. stock market dominated by high-frequency trading. Andrew Brooks, the firm's head of U.S. equity trading, said T. Rowe used a reputable broker-dealer algorithm to buy shares of a heavily traded stock. He was surprised that in order to purchase 2.5 million shares, the firm had to indicate an interest in