Nokia's largest shareholder Solidium raises stake to over 5%

Nokia Oyj'slargest investor, the Finnish government's investment firm Solidium, has increased its stake to just over 5% for the first time, from about 4.8%, according to a regulatory filing.Nokia, which axed its dividend after a profit warning last October, has been scripting a turnaround by keeping a lid on costs and addressing shipment delays in its attempt to compete with rivals such as China's Huawei [HWT.UL] and Sweden's Ericsson .