LONDON — European stocks opened in positive territory on Thursday. The pan-European Stoxx 600 was almost 0.3% higher at the opening bell, with all major bourses in the green but sectors mixed. Apparel companies book-ended the benchmark on Wednesday. Zara's parent company Inditex led the benchmark after it reported strong nine-month results, closing the session 10% higher, and extended gains on Thursday as it edged up 0.2% . Hugo Boss , meanwhile, shed 10% in the previous session after lowering