
A Canadian asset management group, the Alberta Investment Management Company, was also revealed today to hold more than 5 per cent in TNT.
Financial commentators say both moves, revealed in filings to the Dutch stock exchange today, are designed to prompt a break-up or sale of the group.
Investors are calling for TNT's lucrative express division to be hived off from its troubled mail unit, .
Earlier this year TNT was identified as the most likely candidate to buy a stake in Royal Mail, had the Government's plans to part-privatise the UK postal carrier gone ahead.
US company BlackRock, an asset management company, also owns 5 per cent of TNT.
TNT has long been considered a takeover target, . US postal services companies UPS and FedEx, as well as Germany's DHL, were thought to be interested in acquiring the group last year.