Pinterest (NYSE:PINS – Get Free Report) and MongoDB (NASDAQ:MDB – Get Free Report) are both large-cap computer and technology companies, but which is the better investment? Institutional and Insider Ownership88.8% of Pinterest shares are owned by institutional investors. Comparatively, 89.3% of MongoDB shares are owned by institutional investors. 7.1% of Pinterest shares are owned by insiders. Get Pinterest alerts:ProfitabilityThis table compares Pinterest and MongoDB’s net margins, return on equity and return on assets.