Venture capital (VC) plays a vital role in supporting startups. However, in many developing economies, venture capitalists' tendency to prioritize later-stage over early-stage investments constrains their capacity to fund startups. China's recent Science and Technology Innovation Board (STAR) market establishment, with its focus on innovation ability over profitability, enables high-tech startups to list in early stages. This improves exit prospects for VCs investing to the early-stage startups. Employing a regression discontinuity design, our empirical analysis demonstrates that the STAR market establishment attracts additional capital to the VC market and guides VCs toward earlier-stage startups. Mechanism analysis indicates these effects stem from improved VC exit returns rather than heightened exit activities. Our findings underscore the efficacy of specialized stock markets for startups in channeling venture capital towards small and early-stage enterprises. These findings provide valuable insights for developing countries seeking to leverage VC for startup growth.