** Nokia NOKIA.HE shares are up as much as 10.4% to highest in 16-years, accelerating gains after U.S. market open
** Traders cite an upgrade to buy at BofA, who sees the Finnish co transforming from a telco equipment player into an "optical powerhouse" with a European advantage. It ups PO to 10.7 vs 6.8
** "On the back of its Infinera acquisition and CEO change in 2025, we believe Nokia has multiple levers as it rides growing momentum in the optical industry, a key bottleneck in the global AI data center buildout," says BofA analyst Oliver Wong
** By 1507 GMT, Nokia up 7.6%, second biggest STOXX .STOXX gainer'
(Reporting by Danilo Masoni)
((Danilo.Masoni@thomsonreuters.com))