Saturday, 1 August 2015
Last updated 1 day ago
May 20 2010 | 2:26pm ET
Amidst the sudden, precipitous drop in the stock market last week, a technical glitch forced Citadel Investment Group’s market-making business to stop taking orders for exchange-traded funds.
Citadel Execution Services, which executes and routes trades for a half-billion shares every day, began to have problems at about 2:45 p.m. on May 6, according to The Wall Street Journal, five minutes after the market swoon began. Twelve minutes later, it told its clients in an email, “We are currently experiencing Equity system issues. We are advising clients to please route away.”
One of the firm’s key clients, the online brokerage TD Ameritrade, told the Journal, “there were a number of different destinations that we had to reroute.”
Citadel’s problems were with ETFs listed on NYSE Arca. It is unclear what effect, in any, the technical difficulties played in the market issues, which sent the Dow Jones Industrial Average down almost 1,000 points.
At about 3:30 p.m., Citadel began taking some orders again. The next day, it told clients its systems were back to normal.
May 27 2015 | 2:15pm ET
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