https://www.cnbc.com/2019/01/14/snap-shares-rally-after-citi-upgrades-stock-sees-better-ad-revenues.html > Citigroup upgraded Snap's stock Monday in light of accelerating advertising revenue and better profit expectations surrounding the upcoming launch of a new version of its app for Android. > Analyst Mark May bumped his rating to neutral from sell and told clients that a growing number of advertisers are optimistic in the platform's ability to showcase media. The stock rallied more than 2 percent in premarket trading following the upgrade.