Shares of Apple Inc. AAPL, -1.34% slumped 1.5% in afternoon trade Monday, to extend its losing streak to four sessions since it closed at a record $228.36 on Sept. 4. The stock’s $10.42, or 4.6% decline from its record implies the technology giant’s market capitalization has declined $50.33 billion, since it peaked at $1.10 trillion, amid broad weakness in the technology sector, and ahead of the company’s unveiling of its new iPhones. Apple’s price decline during the losing streak has shaved about 71 points off the Dow Jones Industrial Average’s DJIA, -0.23% price, which has lost 69 points during that time. In comparison, shares of the second-most valuable company, Amazon.com Inc. AMZN, -0.67% was down 0.8% to extend its loss streak to four sessions, and has shed $50.53 billion during that streak.