I built a stock research platform that is also a Reddit client called Traddit for Reddit, if you want to check it out. It’s available on the Android and iOS app stores
Android: https://play.google.com/store/apps/details?id=com.bytmatic.traddit&hl=en_US&gl=US
iOS: https://apps.apple.com/us/app/traddit-for-reddit/id1593956528
Investing.com - tracks securities from global stocks exchanges, not just US.
Android app: https://play.google.com/store/apps/details?id=com.fusionmedia.investing iOS app: https://apps.apple.com/us/app/investing-com-stocks-finance/id909998122