The Financial Conduct Authority has fined Macquarie Bank Limited - London Branch (MBL) £13m for serious failings that allowed one of its employees to record more than 400 fictitious trades.

Trader Travis Klein acted in an attempt to hide his trading losses at the Australian-owned bank.

Based on MBL’s London metals and bulks trading desk, he was able to record and take steps to conceal more than 400 fictitious trades in MBL’s internal systems.

The fictitious trades were not detected earlier because of significant weaknesses in MBL’s systems and controls, some of which the firm had been previously made aware of.

Despite knowing of the weaknesses, MBL failed to put effective and timely plans in place to fix them, the regulator said.

As a result, Mr Klein, a relatively junior trader, was able to bypass three key internal controls without detection for more than 20 months. He had joined MBL in August 2017, initially working in Sydney, Australia before moving to MBL’s London branch in October 2018.

The FCA has banned Mr Klein from the financial services industry for acting dishonestly and without integrity and would have fined him £72,000 if his application for serious financial hardship had not been successful.

The fictitious trades cost MBL an estimated $57.8m (£45.97m) to unwind but did not affect customers or the market overall. If MBL had taken timely action to plug the gaps in it systems and controls, the cost could have been substantially reduced or avoided altogether, the FCA said.

Steve Smart, joint executive director of enforcement and market oversight, said: “MBL’s ineffective systems and controls meant that one of its employees could, at least for a time, hide trading losses which cost the firm millions to unwind.

“This should serve as an example to those we regulate; risk can come from within. You need the right systems to identify it so it can be tackled early.”

Macquarie Bank Limited (MBL) is incorporated in Australia and forms part of a global financial services group. It operates in the UK through its London branch and has been authorised by the FCA since December 2001.

The FCA imposed a financial penalty of £13,031,400 on MBL pursuant to section 206 of the Act for breaches of Principle 3 of the FCA's Principles for Businesses. MBL would have been fined £18,616,403 but it agreed to resolve these matters and so qualified for a 30% discount.