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AB Custos is a Swedish investment company. It came under the control of investors Mats Qviberg and Sven Hagströmer and was merged with their investment company Investment AB Öresund in April 2004. Later, it was again separated from Öresund. The largest shareholder was the chairman Jonas Wahlström. It was rebooted again in 2008, and has since then started buying up several companies such as Metro International in March 2017 and Realtid.se.
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- "Billionaire sells Swedish newspaper for only one krona". thelocal.se. 22 May 2017. Retrieved 15 October 2021.