https://www.cnbc.com/2018/07/26/facebooks-tumble-threatens-to-take-a-big-bite-out-of-the-trump-rally.html

Facebook's sudden and stunning vulnerability threatens to undercut the foundation of the stock market rally since Donald Trump was elected president.

The social media giant has been the cornerstone of the FAANG trade — Facebook, Amazon, Apple, Netflix and Google parent Alphabet. Just by itself, Facebook has gained more than 80 percent since Trump's November 2016 victory. The S&P 500 more broadly is up some 35 percent during the time period.