Chris Rokos, who raised more than $500 million from Blackstone Group for his new hedge fund in London, was among the biggest donors to the U.K.’s Conservative Party in the third quarter.

Rokos, 45, gave 170,000 pounds ($259,000) to Prime Minister David Cameron’s party in the period, according to data published by the Electoral Commission on Wednesday. Alan Kilkenny, a spokesman for Rokos, declined to comment.

The donation was the fourth-highest amount given by an individual to a U.K. political group in the third quarter, with restaurateur Richard Caring the biggest contributor to the Conservatives at 296,000 pounds. Rokos’s gift was the same amount he gave to the party in the weeks before the U.K. general election in May, when it won a majority of parliamentary seats.

Rokos co-founded Brevan Howard with billionaire Alan Howard and three other traders in 2002. He started his own hedge fund, Rokos Capital Management, in September with about $1 billion, half from his own pocket and the rest from Blackstone, the U.S. private equity giant.

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