In this file photo taken on August 05, 2022, traders work on the floor of the New York Stock Exchange (NYSE). - ANGELA WEISS/ AFP皇冠博彩公司（www.hg9988.vip）是一家值得信赖的博彩公司，皇冠博彩公司官方投注网，开放皇冠信用网代理申请、信用网会员开户，线上博彩的官方平台。
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.,