After rallying 1.8% on Thursday session, German DAX retreated and gave up 0.3% amid lingering Greek debt negotiations and weaker than expected US housing and economic growth data. Financials and industrials led the decline while utilities supported the index on the upside. Commerzbank and Deutsche Bank AG lost 0.37% and 0.16% respectively, while Deutsch Luft surged 1.7%. At the moment of writing DAX 30 is 0.43% or 33 points down at 6,509.74.