Update: The US stock market struggled for direction, moving between negative and positive territory Friday, but indexes were on track to finish the week with...

Update: The US stock market struggled for direction, moving between negative and positive territory Friday, but indexes were on track to finish the week with the steepest losses in seven weeks. Treasury prices showed little change Friday after a see-saw session, posting a weekly advance as Ukraine worries have boosted safety plays. Gold futures posted a fifth straight gain. Oil futures moved higher. UK stocks closed at the lowest level since early Feb on Friday as wider worries about tensions in Ukraine and an economic slowdown in China offset better-than-expected UK construction data. European stock markets traded with broad-based losses on Friday, as continuing tensions in Ukraine and worries about slowing economic growth in China hampered the investing mood. London: BHP down 0.20% Rio down 0.68%. New York: BHP down 0.34% Rio up 1.01%. Base metals on the LME traded higher.