MIDEAST STOCKS-Saudi shares advance, rest of region quiet

DUBAI, Nov 23 (Reuters) - Saudi Arabia's stock market extended gains in early trade on Wednesday, outperforming regional markets where local retail investors were the main participants. Riyadh's index added 1 percent in the first 45 minutes of trade, inching closer to technical resistance at the July peak of 6,703 points. Petrochemicals and banking stocks, which have been outperforming other sectors over the past month, strengthened. Saudi Basic Industries added 1.2 percent while Banque Saudi Fr