LIBOR scandal

This dwarfs by orders of magnitude any financial scam in the history of markets.

The Libor scandal was a series of fraudulent actions connected to the Libor (London Interbank Offered Rate) and also the resulting investigation and reaction. The Libor is an average interest rate calculated through submissions of interest rates by major banks across the world. The scandal arose when it was discovered that banks were falsely inflating or deflating their rates so as to profit from trades, or to give the impression that they were more creditworthy than they were. Libor underpins approximately $350 trillion in derivatives. It is currently administered by Intercontinental Exchange, which took over running the Libor in January 2014.

The banks are supposed to submit the actual interest rates they are paying, or would expect to pay, for borrowing from other banks. The Libor is supposed to be the total assessment of the health of the financial system because if the banks being polled feel confident about the state of things, they report a low number and if the member banks feel a low degree of confidence in the financial system, they report a higher interest rate number. In June 2012, multiple criminal settlements by Barclays Bank revealed significant fraud and collusion by member banks connected to the rate submissions, leading to the scandal.

Because Libor is used in US derivatives markets, an attempt to manipulate Libor is an attempt to manipulate US derivatives markets, and thus a violation of American law. Since mortgages, student loans, financial derivatives, and other financial products often rely on Libor as a reference rate, the manipulation of submissions used to calculate those rates can have significant negative effects on consumers and financial markets worldwide.

On 27 July 2012, the Financial Times published an article by a former trader which stated that Libor manipulation had been common since at least 1991. Further reports on this have since come from the BBC and Reuters. On 28 November 2012, the Finance Committee of the Bundestag held a hearing to learn more about the issue.

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