The fortunes built in Silicon Valley over the past two decades have created a new class of philanthropists—entrepreneurs who made their wealth through technology and are now deploying it toward ambitious, long-term goals. Within the Giving Pledge community, a distinct subset has emerged: tech billionaires who view philanthropy not as charity, but as investment in humanity’s future.

Their approach reflects the mindset that built their companies: think big, take calculated risks, and optimize for impact at scale.

Among tech philanthropists, Yuri Milner stands out for his singular focus on scientific advancement. The founder of DST Global, whose early investments in Facebook,.