Sacks has been investing in technology companies for twenty years.[46] As an angel investor, his investments include Addepar, Affirm, Airbnb, Clutter, Eventbrite, Facebook, Gusto, Houzz, Intercom, Mixpanel, Opendoor, Palantir Technologies, PayPal, Postmates, ResearchGate, Scribd, Slack, SpaceX, SurveyMonkey, ThirdLove, Uber and Wish.[47]