Europe shares extend run of gains into 5th day By: MarketWatch May 20, 2009 at 04:02 AM EDT European shares extend string of gains into a fifth day, boosted by gains from oil producers and airlines. Read More >> Related Stocks: Astrazeneca Plc ADR BP Plc ADR HSBC Holdings Plc ADR Lloyds Banking Group Plc ADR Novartis Ag ADR Royal Dutch Shell Plc ADR