British bank Barclays is taking allegations "very seriously" that it misled large institutional investors and other clients in the United States by falsely telling them it was taking measures to protect them from predatory high-frequency traders, it said today.
A Barclays spokesman said: "We take these allegations very seriously.
"Barclays has been co-operating with the New York Attorney General and the SEC (Securites and Exchange Commission) and has been examining this matter internally. The integrity of the markets is a top priority of Barclays."
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