The QE Index ended 0.10% lower at 7,712.61 as investors started profit booking in the industry segment. Shares of Industries Qatar dipped 0.64% to finish at QR108.40. Commercial Bank of Qatar (CBQ) outperformed, climbing 1.52% higher to close at QR87.10. The QE Index gained 10.87% in 2010 so far, topping all other GCC exchanges.