European stocks fell on Thursday, returning to losses after a brief uptick the previous day, with both the STOXX 50 and STOXX 600 down 0.3% to two-week lows, as investors weighed a fresh round of mixed corporate earnings. Commerzbank shares slipped 2.5% after the lender reported a surprise 7.9% year-on-year drop in net profit. Diageo fell 2.8% following a downgrade to its full-year outlook, while Maersk lost 5.1% despite posting upbeat results. On the upside, DHL jumped 5.4% to rank among the top performers after achieving earnings growth despite ongoing trade tensions. AstraZeneca added 0.4% after posting record quarterly revenue and reaffirming its full-year guidance, while Rheinmetall rose 0.3% on a 20% increase in sales. Sainsbury’s gained 1.4% after raising its outlook.