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25madison is a venture studio and investment firm that collaborates with founders to build and scale innovative companies, providing capital, resources, and operational expertise.
25madison is a venture studio and investment firm that partners with entrepreneurs to create and grow innovative businesses from the ground up. 25madison helps founders navigate the early stages of company development, from concept to launch and beyond. The firm leverages its in-house team of experts and extensive network of advisors to provide strategic guidance, technical resources, and market access, ensuring startups have the support they need to succeed. Focused on building high-growth companies across various sectors, 25madison is committed to fostering innovation and driving long-term value creation for its portfolio businesses.

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Matrix Partners, an early-stage venture capital firm founded in 1977 and based in Menlo Park, California, with additional locations in Boston and San Francisco, invests in Seed and Series A technology-driven sectors including enterprise software, cybersecurity, fintech, health tech, AI, B2B, infrastructure, semiconductors, and consumer markets, supporting visionary entrepreneurs with expertise and mentorship.
Sapphire Ventures, LLC is a global software venture capital firm managing over $11 billion in assets, headquartered in Austin, London, New York, Menlo Park, and San Francisco. Specializing in scaling enterprise software companies, they support startups from expansion stage to IPO, utilizing 20+ years of expertise. Through its branches—Sapphire Ventures, Sapphire Partners, and Sapphire Sport—the firm invests in enterprise software, early-stage tech and culture-centric companies, and as a limited partner in venture funds. With over 170 investments leading to 30+ IPOs and 45 acquisitions, their portfolio growth team provides strategic services to bolster leadership, boasting an 82 CEO NPS. Active on social media, Sapphire Ventures fosters community and innovation in B2B software.
Founders Fund, based in San Francisco, is a premier venture capital firm known for investing in transformative ventures across all stages and sectors worldwide, supporting innovative companies like PayPal, SpaceX, and Airbnb with capital, expertise, and strategic guidance to drive significant industry impact and foster groundbreaking solutions.