Some of the biggest names in technology saw shares decline in after-hours trading Wednesday, after Apple Inc. AAPL, +0.11% trimmed its forecast for holiday sales. Apple suppliers were some of the hardest hit, with Skyworks Solutions Inc. SWKS, +1.40% Qorvo Inc. QRVO, +0.74% and Broadcom Inc. AVGO, -0.30% all down at least 5% as of 6 p.m. Eastern time. Other members of the so-called "FAANG" grouping of tech stocks were also hit: Amazon.com Inc. AMZN, +2.47% dropped about 3%, Facebook Inc. FB,...

Facebook Inc. FB, +0.53% detailed a major executive shakeup Tuesday in an internal email to employees, including a new initiative aimed at leveraging blockchain technology, according to a report. Recode reported that David Marcus, who was leading Facebook's Messenger business, will move over to lead a new blockchain group, while Messenger will be grouped with the core Facebook app, WhatsApp and Instagram in a group led by Chief Product Officer Chris Cox. Facebook will have two other core...