Marathon Fund

Fuelin is a personalized performance nutrition app designed to help athletes and active individuals optimize their nutrition based on their specific goals, workouts, and lifestyles. It provides tailored nutrition coaching and integrates with various training platforms.

Anthropic is an AI safety and research company dedicated to building reliable, interpretable, and steerable AI systems. As a public benefit corporation, they focus on the opportunities and risks associated with AI, aiming to ensure its benefits while mitigating potential harms.

Replit is an AI-powered platform for building and deploying apps and websites collaboratively. It offers tools for software development, including a built-in database and security features. Replit aims to democratize software creation.

Perplexity is AI for people who expect more. Our products serve those whose questions spark change and whose decisions bend the world toward progress. We obsess over the details so our users can obsess over what comes next.

Crusoe is a vertically integrated AI infrastructure provider, building large-scale, renewable-powered data centers and cloud platforms optimized for high-performance workloads.

Vitract offers advanced microbiome testing solutions, including 16S and shotgun sequencing, to help individuals optimize their gut health and overall well-being through personalized dietary and lifestyle recommendations.

Purpose-driven venture capital firm backing founders building startups that reimagine the future. Invests across health, logistics, SaaS, enterprise, CPG/D2C, AI, data, and fintech.

Operator Partners is a self-funded $40M-$70M venture fund run entirely on the partners own money without outside investors, led by founders with billion-dollar exits including Flatiron Health (acquired by Roche) and the first investor in fintech unicorn Plaid. They deliberately avoid leading rounds or taking board seats, instead writing $250K-$1M checks alongside lead investors while offering on-demand operator support to founders.

A $78M seed fund run by three Latin American immigrant partners who lead or co-lead rounds by writing $500K-$2.5M checks and taking at least 50% of each funding round. The fund deliberately hunts for breakout startups in overlooked U.S. markets like Seattle, Salt Lake City, and Miami.

Pre-seed investor that co-founds, makes unusually large pre-incorporation checks, and leverages partners' private-equity and NYC development ties to connect founders with hedge fund CEOs and senior White House officials. Max Ventures is a venture capital fund that co-founds companies from within the fund (having built eight venture-backed startups) and makes unusually large first checks at the pre-seed stage, often committing capital before companies are even incorporated. The fund's partners bring backgrounds from private equity and New York City's economic development office, enabling them to provide heavy customer introduction support including direct access to hedge fund CEOs and senior White House officials.