Stocks extended their slump following losses on Wall Street, with Treasuries adding to their decline as investors braced for another interest rate increase from the Bank of England later Thursday. Most Read from Bloomberg In the latest earnings news, Infineon Technologies AG plunged as much as 10% after disappointing forecasts from the German chipmaker, leading a decline in European technology shares. Deutsche Lufthansa AG dropped amid concerns over debt and higher costs. Europe’s regional benchmark equity index retreated for a third day. US contracts signaled further weakness after the worst session in three months for the S&P 500. The US...