The social media firm kicked off the investigation in March 2018 in the wake of the Cambridge Analytica scandal. In a blog post, Ime Archibong, Facebook's VP of product partnerships, wrote that it suspended "tens of thousands" of apps for a variety of reasons. Of the problematic apps it identified, Facebook said that they originated with about 400 developers across the world.
Facebook has banned apps completely "in a few cases," Archibong wrote, with one example being an app called myPersonality that shared information with researchers and companies and did not comply with an audit.
The company said it has made other changes to how it works with developers as a result of the investigation, including tightening up restrictions on how much user data developers can access.
Facebook is a holding in Jim Cramer's Action Alerts Plus portfolio.