Electronic Errors Caused a Flash Crash In India’s Stock Markets

Electronic malfunction caused a flash crash in India’s stock market yesterday.

From Bloomberg,

The plunge and rebound in Indian stocks that pushed the S&P CNX Nifty (NIFTY) Index down 16 percent over eight seconds underscored concern about financial markets.

Trading in the Nifty and some companies stopped yesterday in Mumbai for 15 minutes after the 50-stock gauge tumbled as much as 16 percent. A brokerage that mishandled trades for an institutional client was to blame, according to the National Stock Exchange of India.

Regulators around the world are probing market structure and electronic trading after a series of malfunctions. In May 2010, high-frequency orders worsened the so-called flash crash, which briefly wiped $862 billion from U.S. stocks. The Nasdaq Stock Market in May this year was overwhelmed by order cancellations and trade confirmations were delayed in the public debut of Facebook Inc. (FB), 2012’s largest initial public offering.

“Everyone is very sensitive to these electronic errors,” Adam Mattessich, head of international trading at Cantor Fitzgerald LP, said by phone in New York. “It’s the kind of thing that could be nothing or it could become a financial calamity.”

Orders entered by Emkay Global Financial Services Ltd. (EMKAY) that led to trades valued at 6.5 billion rupees ($126 million) caused the drop, NSE spokeswoman Divya Malik Lahiri said from New Delhi.

Circuit breaker limits enforced by the NSE get activated “after existing orders are executed,” Ravi Varanasi, head of business development at the exchange in Mumbai, said by phone. “We are investigating the reason behind the wrong orders and how checks and balances at the member’s end failed.”

Admittedly flash crashes from electronic errors can be a source of anxiety.

Intraday performance of the NIFTY

But as the above shows, markets eventually smooth out any anomalies.

Despite the intraday flash crash, India NIFTY was down only .7% yesterday and posted 1.9% gain over the week. From the start of the year the NIFY is up 24.28% as of Friday.

All charts from Bloomberg

Bottom line: Bugs happen. Politicization of the electronic flash crash isn’t required and won’t guarantee perfection. At worst, it may work to the contrary.