Stocks slipped on Monday. Brands such as Caterpillar, DowDuPont, Google, and Facebook traded lower on a variety of economic news. Facebook dipped 6.77% today in the wake of news that as many as 50 million of its users may have had their data compromised. On another note, Tesla shed 2.4% after Goldman Sachs reiterated a sell rating on the brand. Looking ahead, the Federal Reserve will kick off a two-day meeting on Tuesday with commentary to follow on Wednesday.