Major Japanese trading house Mitsubishi Corp said September 20 it was carrying out an investigation after its Singapore-based subsidiary lost USD 320 million because of unauthorised trades by an employee.
In a statement, the firm said the losses involved a local employee of Petro-Diamond Singapore who was hired "to handle its crude oil trade with China".
The employee "was discovered to have been repeatedly engaging in unauthorised derivatives transactions and disguising them to look like hedge transactions since January of this year", it said.
A fall in crude prices from July resulted in "large losses", and the subsidiary began investigating the employee's work in mid-August, the statement added, with PDS expecting "to book a loss of approximately USD 320 million".
Mitsubishi Corp said the derivatives position was quickly closed and investigations were carried out at the subsidiary, other group companies and in-house departments involved in derivatives trading.
"These investigations confirmed that there are no such problems or risks at present," the firm said, adding that the employee has been fired and the subsidiary has filed a complaint with police.
Oil prices have see-sawed in 2019, hitting a peak in April before plunging later in the year. They soared again after last weekend's attacks on Saudi oil facilities.
There have been similar setbacks suffered in oil trades in the past, with Metallgesellschaft losing USD 1.2 billion in 1994, and China Aviation Oil losing USD 550 million because of a price surge, according to Bloomberg News.
In 2007, Japanese firm Mitsui shut down its Singapore oil-trading operation after a trader -- who was imprisoned along with his supervisor -- lost USD 81 million in hidden trades, Bloomberg added, also citing the suspension last year of two top officials at Unipec after the Chinese firm lost USD 656 million.
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