This is what the stock market looked like at 2pm today.
From the Reuter's article,
The Dow suffered its biggest ever intraday point drop, which may have been caused by an erroneous trade entered by a person at a big Wall Street bank, multiple market sources said.
and the suspected cause? A UI Glitch!
In one of the most dizzying half-hours in stock market history, the Dow plunged nearly 1,000 points before paring those losses—all apparently due to a trader error.
According to multiple sources, a trader entered a "b" for billion instead of an "m" for million in a trade possibly involving Procter & Gamble [ PG 60.75 -1.41 (-2.27%) ], a component in the Dow. (CNBC's Jim Cramer noted suspicious price movement in P&G stock on air during the height of the market selloff. Watch.)
Sources tell CNBC the erroneous trade may have been made at Citigroup [ C 4.04 -0.14 (-3.35%) ].
"We, along with the rest of the financial industry, are investigating to find the source of today's market volatility," Citigroup said in a statement. "At this point we have no evidence that Citi was involved in any erroneous transaction."
According to a person familiar with the probe, one focus is on futures contracts tied to the Standard & Poor’s 500 stock index, known as E-mini S&P 500 futures, and in particular a two-minute window in which 16 billion of the futures were sold.
Citigroup’s total E-mini volume for the entire day was only 9 billion, suggesting that the origin of the trades was elsewhere, according to someone close to Citigroup’s own probe of the situation. The E-minis trade on the CME.