The Global Catalyst Initiative (GCI) helps emerging social ventures prove their models and attract growth funding through three main activities: 1) providing proving capital to ventures to reach key milestones, 2) offering technical assistance, and 3) connecting ventures to networks. To date, GCI has reviewed over 150 ventures, invested in six, and seen positive early signs. However, GCI faces challenges in functioning as a private sector intermediary in a market that cannot pay for it and determining whether to focus on in-house capital or building expertise.