Here’s Why Almost Every Major Tech Stock Fell on Friday by Aaron Pressman @FortuneMagazine April 22, 2016, 2:44 PM EDT E-mail Tweet Facebook Linkedin Share icons Disappointing quarterly results at tech bellwethers Alphabet, the parent of Google, and Microsoft ignited a sell-off across many of the largest stocks in the sector on Friday. Alphabet googl reported revenue of $20.3 billion for the quarter, matching expectations. But adjusted profits of $7.50 per share missed analyst estimates in part due to growing losses on its long-term “other bets” unit, which includes self-driving cars and medical research. Its shares lost 6% on Friday. Microsoft msft said brought in $22.1 billion in sales, as analysts expected, but disappointed with adjusted earnings share of only 62 cents on Thursday due in part to a shortfall profits in its critical cloud computing effort. Its shares lost 7% on Friday. The two profit misses, following earlier disappointments from Intel intc and International Business Machines ibm , were apparently enough to prompt many investors in other large cap tech stocks to lighten up their holdings heading into the weekend. Get Data Sheet, Fortune‘s technology newsletter. Facebook fb , which competes with Google for online advertising, suffered the most, dropping 3%. Chinese e-commerce giant Alibaba baba lost 2% as did Intel and creative design software producer Adobe Systems adbe . Shares of IBM, Apple aapl , and Salesforce.com crm each lost about 1%. Only one major tech stock went against the grain with a blockbuster gain. Shares of struggling chipmaker Advanced Micro Devices amd were up 38% to $3.62, the highest level since mid-2014, after the company announced a new joint venture in China. AMD agreed to license server chip designs that will be made and sold in China by a Chinese partner, Tianjin Haiguang Advanced Technology Investment. Also, while AMD’s quarterly revenue was down 19% from year ago and it reported yet another quarterly loss, both figures were better than analysts had expected.