We study how information disclosure concerns shape the choice of limited partners (LPs) by venture capitalists (VCs). Late-2002 court rulings prevented public LPs from providing confidentiality to investment managers. The best-performing VCs, but not other managers, responded by excluding public LPs from their new funds. Lost access reduced public LP returns by $1.6 billion relative to $14 billion of their VC commitments. Legislation reducing disclosure, contracts limiting information access, and added fund-of-funds intermediaries helped restore access. These changes focused on protecting portfolio company information, highlighting the importance of proprietary information for VC investing and the potential costs of transparency.