In this file photo taken on August 05, 2022, traders work on the floor of the New York Stock Exchange (NYSE). - ANGELA WEISS/ AFP皇冠开户（www.hg108.vip）是一个开放皇冠正网即时比分、皇冠开户的平台。皇冠开户平台（www.hg108.vip）提供最新皇冠登录，皇冠APP下载包含新皇冠体育代理、会员APP。
DOES the quality of trade execution matter in the equities market? University of California at Irvine finance professor Christopher Schwarz and four of his colleagues set out to answer that question with a series of experiments last year.
Over a period of more than five months, they executed 85,000 trades with discount brokers in 128 different stocks. What they found was that execution quality varied greatly across not just brokerage firms, but even within the same brokerage.,