A district judge ruled at Westminster Magistrates' Court that Sarao's alleged actions constituted a crime in the UK. Sarao could be handed over to the US authorities to stand trial there, the judge said.
The ruling means Sarao can be sent to the US to answer 22 counts of wire fraud, commodities fraud and market manipulation carrying a maximum sentence of 380 years' imprisonment.
Sarao is accused of contributing to events on May 6, 2010, when the Dow Jones index briefly fell nearly 1,000 points, temporarily wiping nearly USD 1 trillion off shares. The 36-minute-long crash was its biggest ever intraday slump.
The USDepartment of Justice saidSarao's activity "contributed to the market imbalance on that day" and he is accused of making a USD 900,000 profit that day, and USD 40 million over four years by employing similar tactics.
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He is accused of minting millions of dollars with a computer programme that could automatically manipulate prices.
Sarao, who is wanted in the US on 22 criminal counts, traded on the Chicago Mercantile Exchange from his parents' home near Heathrow Airport.
Sarao attended the brief hearing dressed in a red jumper and black trousers and was released on bail afterwards.
He denies any wrongdoing and intends to appeal against the ruling, which must in any case be approved by British Home Secretary Theresa May before the extradition can take place, the BBC reported.
US regulators have also filed civil claims against Sarao, adding that he made USD 40 million over five years.
Sarao was charged in a federal criminal complaint in the Northern District of Illinois in February 2015.
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Sarao's spoofing netted him a profit of USD 40 million (28 million pounds), they argue.
Sarao's legal team have argued that he cannot be extradited because nothing he did constituted a crime in the UK.
His lawyer, Richard Egen, told journalists outside the courtroom: "We still think we have a strong argument and we will be appealing the decision once the Secretary of State makes her decision.