In this episode of Building Billions, I sit down with JD Ross, founder of Opendoor, partner at Atomic Ventures, and founder of WithCoverage, to break down how he’s taken companies from idea to billions in enterprise value, including scaling Opendoor from first revenue to an $8B public company in under six years. We get into what actually drives growth at scale, how to understand your business equation, why companies break as they expand, and what it really takes to build and lead teams beyond the founder, while also unpacking the massive opportunity in “boring” industries, AI-enabled operators, and the $5T+ small business wealth transfer that’s reshaping where the next generation of billion-dollar companies will be built.