Facebook 401k Plan is a defined contribution plan with a profit-sharing component and 401k feature. This plan has a BrightScope Rating of 86, placing it in the top 15% of all plans in its peer group. This plan is also in the top 15% of plans for Company Generosity, Salary Deferral, and Total Plan Cost. Facebook 401k Plan currently has over 22,200 active participants and over $1.3B in plan assets.
https://www.brightscope.com/401k-rating/76063/Facebook-Inc/77217/Facebook-401K-Plan/