How Alexander built the fortune
Alexander Karp, who goes by Alex, owes his fortune to Palantir Technologies, a software company he co founded in 2003 with Peter Thiel, Joe Lonsdale, Stephen Cohen and Nathan Gettings. Thiel provided early funding and the idea of adapting fraud detection techniques from PayPal to the problems faced by intelligence and defence agencies after the September 11 attacks. Karp, a friend of Thiel's from law school, became chief executive and has held the role ever since.
Palantir's first major product, Gotham, helps government analysts combine large and scattered data sets, from intelligence reports to financial records, and search them for connections. An early investment from In-Q-Tel, the venture arm associated with the US intelligence community, helped the company win its first customers. A second platform, Foundry, brought similar tools to commercial clients such as manufacturers, energy companies and health systems. More recently the company launched an artificial intelligence platform that lets customers apply large language models to their own operational data.
Palantir stayed private for seventeen years and became known for its secrecy and its willingness to work with military and police agencies that many Silicon Valley firms avoided. In September 2020 it listed its shares through a direct listing on the New York Stock Exchange. Growth in both government and commercial revenue, and investor enthusiasm for artificial intelligence, have since lifted the company's market value substantially. Karp's wealth reflects his shares and options in the company, along with sales made under trading plans.
Companies and holdings
Karp's holdings are concentrated in Palantir, where he owns common stock and a class of shares that, together with those held by Thiel and Cohen, give the founders a large share of voting control. That structure lets the founding group steer the company even though their economic stake is a minority of the total.
Palantir moved its headquarters from Palo Alto to Denver, Colorado, in 2020, and in 2024 it transferred its stock listing from the New York Stock Exchange to Nasdaq. The company works with the US Department of Defense, intelligence agencies, allied governments in Europe and elsewhere, and a growing list of corporations.
Karp has sold Palantir shares regularly since the listing, mostly through pre arranged trading plans and to cover taxes on stock awards, while keeping a substantial holding. His compensation in the year of the listing, largely in the form of stock options, was among the largest reported for any American chief executive at the time.
Early life and career
Karp was born in New York City in 1967 and grew up in Philadelphia. His father was a paediatrician and his mother an artist, and both were involved in progressive political causes. He graduated from Haverford College in 1989 and then earned a law degree at Stanford Law School, where he met Peter Thiel, who was a fellow student.
Rather than practise law, Karp moved to Germany and studied social theory at Goethe University in Frankfurt, completing a doctorate in 2002. His dissertation dealt with aggression and the social function of language, drawing on ideas from the Frankfurt School of philosophy. While in Europe he also managed money for wealthy investors, which gave him a network of contacts that proved useful when he began raising money for Palantir.
He has often described himself as an unconventional chief executive, and he is known for public remarks that mix business discussion with philosophy and politics.
Philanthropy and public life
Karp has not built a large personal foundation, and details of his private giving are limited. He has spoken more about his views on technology and national security than about charity. In 2025 he published The Technological Republic, co written with Palantir executive Nicholas Zamiska, which argues that the software industry should work more closely with Western governments on defence and public needs.
He has been an outspoken supporter of Ukraine and Israel in their conflicts, and Palantir has provided software to both governments. These positions have drawn praise from some and criticism from civil liberties groups and activists who object to the company's work for military, police and immigration agencies. Karp has responded by arguing that democracies need strong technological capabilities and that companies should be willing to support them openly.