By Greg Morcroft
NEW YORK (MarketWatch) -- Knight Capital Group KCG -2.07% , which earlier this month said it lost $440 million on a trading mistake, on Tuesday said that most of its market-making trading metrics fell during July. The company said its July dollar volume in such trading fell to $19.04 billion, from $23.03 billion a year ago. It said average daily trades in its market-making business fell to 2.97 million, from 3.13 million. Total daily share volume of those trades averaged 3.34 million a day versus 3.69 million a year ago. The average number of shares traded in all the market-making transactions each day was 215.9 million, up from 168.9 million a year ago. Knight shares fell 3.5% in Tuesday's preopen trade. On Monday the shares fell sharply in early trade as some preferred shares issued in exchange for emergency capital investments to save the firm from collapse converted to common shares and diluted existing holders. The shares recovered some late Monday, and closed off a bit more than 2%.
