Fathom Fund is a Houston-based venture capital fund that combines McKinsey-style global energy expertise with institutional deep-tech investing experience, focusing on pre-commercialization technology platforms where significant technical risk remains rather than later-stage or purely software investments. The fund positions itself at the intersection of AI compute, climate/energy, advanced materials, and defense with an integrated thesis, and despite being founded in 2023, is already co-investing alongside heavyweight strategics and global funds in complex, capital-intensive deep-tech rounds.