Great frauds in history: the Hound of Hounslow

"Flash crash" trader Navinder Singh Sarao made around $70m from manipulating the futures market.

Navinder Singh Sarao © Getty

Navinder Singh Sarao was born in Hounslow, west London, in 1979. He graduated from Brunel University and took a job at Futex, a trading firm that allowed workers to trade with the firm’s own money in return for half of the profits. Sarao enjoyed huge success, but was unhappy with handing over a share of his winnings, so he moved to another trading house, CFT Financials, in 2008, buying a seat on the Chicago Mercantile Exchange (CME) in order to cut trading costs.

What was the scam?

A chunk of Sarao’s earnings came from “spoofing”, a form of market manipulation. He would place trades in e-mini S&P futures (a financial instrument based on the price of the S&P 500), cancel them before they could be filled, then profit from the resulting price movements. His early trades were relatively small, but he developed his own software system that allowed him to place (and cancel) larger sums, accounting for up to 7% of e-mini futures trades.

What happened next?

US regulators claim that on 6 May 2010 Sarao placed cancelled trades equal to nearly a third of the total shares on offer that day. This in turn vastly increased the impact of a large $4bn sell order from asset manager Waddell & Reed, causing the Dow Jones to briefly plunge by 9%, although it quickly rebounded (the “flash crash”). The CME warned Sarao several times, both before and after the event, but it wasn’t until 2015 that Sarao was arrested at the Hounslow home from which he conducted his trades – the press dubbed him the “Hound of Hounslow” – and extradited to the US.

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After pleading guilty to spoofing (which was only made illegal in the US in 2010, and is covered under market manipulation rules in the UK) and wire fraud, Sarao was allowed to return to the UK, and was sentenced to one year of home supervision earlier this year, partly because of his help in identifying other scammers.

Regulators estimate that he made $879,018 from the flash crash alone, plus $70m from his trading between 2009-2015, though they accept that some of this came from legitimate trades. Ironically, Sarao lost most of his fortune after he invested in a tax-avoidance scheme that proved to be a front for an investment scam.

Lessons for investors

Sarao had extraordinary mathematical abilities and trading prowess. If he can get so badly burned by stock volatility and scams, so can you.

Dr Matthew Partridge

Matthew graduated from the University of Durham in 2004; he then gained an MSc, followed by a PhD at the London School of Economics.

He has previously written for a wide range of publications, including the Guardian and the Economist, and also helped to run a newsletter on terrorism. He has spent time at Lehman Brothers, Citigroup and the consultancy Lombard Street Research.

Matthew is the author of Superinvestors: Lessons from the greatest investors in history, published by Harriman House, which has been translated into several languages. His second book, Investing Explained: The Accessible Guide to Building an Investment Portfolio, is published by Kogan Page.

As senior writer, he writes the shares and politics & economics pages, as well as weekly Blowing It and Great Frauds in History columns He also writes a fortnightly reviews page and trading tips, as well as regular cover stories and multi-page investment focus features.

Follow Matthew on Twitter: @DrMatthewPartri