Knight Bruised as Analyst Estimates $170 Million Loss - Bloomberg→

The latest black eye for U.S. equity markets is proving a body blow for Knight Capital Group Inc. (KCG)

Shares of the Jersey City, New Jersey-based firm plunged 33 percent, the most ever, in recordvolume yesterday as investors speculated on how much a breakdown that whipsawed owners of 140 stocks will cost the company. Its loss may be as much as $170 million, according to analysts at JPMorgan Chase & Co.