LIBOR Scandal

The London Interbank Offered Rate, commonly known as LIBOR, served as a benchmark interest rate used to price approximately $350 trillion in financial contracts globally, including mortgages, student loans, and complex derivatives. Banks were supposed to report their borrowing costs honestly each day, with these submissions used to calculate the official LIBOR rates across multiple currencies and time periods.

Beginning in at least 2005, traders at major banks including Barclays, UBS, Royal Bank of Scotland, and Deutsche Bank systematically manipulated their LIBOR submissions to benefit their trading positions. Traders coordinated through instant messages, emails, and phone calls, asking colleagues responsible for rate submissions to move rates higher or lower depending on their derivative positions.

The manipulation occurred through two primary methods. Traders would request specific rate submissions to maximize profits on their derivative portfolios, sometimes offering monetary rewards or other incentives to rate submitters. Additionally, during the 2008 financial crisis, banks artificially lowered their submissions to appear more creditworthy than they actually were, misleading markets about their financial health.

Barclays became the first bank to admit wrongdoing in June 2012, paying $450 million in fines to U.S. and U.K. regulators. The scandal prompted the resignation of Barclays CEO Bob Diamond and chairman Marcus Agius. Subsequent investigations revealed similar manipulation at numerous other major financial institutions.

Tom Hayes, a former UBS and Citigroup trader, became the scandal’s most prominent individual defendant. Prosecutors portrayed him as the ringleader of a global conspiracy, and he was sentenced to 14 years in prison by a British court in 2015, later reduced to 11 years. Several other traders received prison sentences in both the U.S. and U.K.

The total regulatory fines imposed on banks exceeded $9 billion globally. The scandal prompted fundamental reforms to benchmark interest rate setting, with LIBOR scheduled for phase-out by 2023 in favor of alternative reference rates based on actual transaction data rather than bank submissions.