Swiss trading house Mercuria has moved to become a significant player in the marine fuel market by hiring a team of close to 40 former employees from the once-largest supplier, traders and sources close to the matter said on Tuesday. The bankruptcy of Denmark’s OW Bunker, which had controlled around 7 percent of the global shipping fuel market and employed more than 600 people, has given Mercuria an opportunity to beef up its business shortly after it acquired the physical commodities unit of JPMorgan Chase & Co. The hiring of OW Bunker traders will help integrate Mercuria’s existing fuel oil business, trading cargoes typically in sizes of 20,000 tonnes, and the sale of fuel in smaller lots to be delivered to ships, which take only up to around 5,000 tonnes per delivery. Traders estimated that OW Bunker used to sell and trade up to 300,000 tonnes of marine fuel, also known as “bunker”, in South Korea and Japan every month, and a similar volume in Singapore. Mercuria has launched a bunker business in North Asia by hiring 17 former OW Bunker staff, an employee who has been absorbed said. The team is led by Joon Kim, the former branch manager of OW Bunker South Korea, the source said. It includes 10 traders overseeing bunker trading in South Korea and Japan, new markets for the Swiss firm. Mercuria is also seeking to hire 11 to 12 employees in Singapore, adding to its current team of three traders, a second source at the Singapore office said. In Singapore, the world’s biggest market for bunker fuel, it is in competition with other cash-rich traders and suppliers, including OW Bunker’s main competitor World Fuel Services, to grab a bigger market share. Mercuria may also add staff in Greece, another source said. Current monthly bunker fuel sales volumes are around 3.5-3.6 million tonnes in Singapore and a total of around 1.1-1.2 million tonnes in South Korea and Japan.