Alex Karp

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Alex Karp helped make Palantir one of the world’s leading data analysis software companies.

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Alex Karp is an American businessman and chief executive officer of Palantir Technologies, Inc. (PLTR), a software company specializing in data integration and analysis. He cofounded the company in 2003 with venture capitalist Peter Thiel, whom he met at Stanford Law School. Under Karp’s leadership, Palantir grew from a start-up focused on counterterrorism software into a major provider of data analysis tools for government agencies, military and security organizations, and commercial customers.

Born on October 2, 1967, in New York City, Alex Karp grew up in the suburbs of Philadelphia alongside his younger brother, Ben. Their parents, African American artist Leah Jaynes Karp and Jewish pediatrician Robert Joseph Karp, fostered a highly intellectual and socially engaged household. Karp has described them as politically left-leaning “hippies” who regularly took their children to civil rights and pro-labor demonstrations.

Although a curious and hardworking student, Karp struggled with severe dyslexia. He later described the condition as formative, saying that it taught him to think independently and question conventional assumptions. “There is no playbook a dyslexic can master, and therefore we learn to think freely,” he said in 2025.

After graduating from Central High School in Philadelphia, Karp enrolled at nearby Haverford College. Shortly before he began his studies, his parents divorced, and his father refused to help pay for his education. Karp’s mother covered tuition and other expenses using loans and by dipping into her pension fund. Karp later recalled worrying whether he would be able to complete his studies. Despite the challenges, he graduated in 1989 with a bachelor’s degree in philosophy.

Later that year, he moved to California to enroll at Stanford Law School, a choice he almost immediately regretted. It was there that Karp befriended Thiel, a classmate who would later become his business partner. Disillusioned with his studies, Karp traveled throughout Europe during the summer before his final year of law school and was inspired to pursue a doctorate while living in Germany.

After receiving his J.D. in 1992, he spent several years abroad—notably studying for a time under German philosopher Jürgen Habermas—and completed a Ph.D. in neoclassical social theory at Goethe University of Frankfurt in 2002.

Despite his academic credentials, Karp, then in his mid-30s, had no interest in either a legal career or a scholarly one. Shortly after finishing his studies, he received a $12,000 inheritance from his grandfather, which he used to start a successful London-based investment company called Caedmon Group, a reference to his middle name.

By the time Karp reconnected with Thiel in the early 2000s, Thiel had become a multimillionaire following the sale of PayPal to eBay (EBAY) for $1.5 billion. With his new wealth, Thiel invested in several start-ups and established Clarium Capital Management, a hedge fund firm. Karp spent a few months raising money for Clarium before Thiel tapped him to help launch a new software venture that he had been formulating since the September 11 attacks in 2001.

In the wake of the attacks, Thiel concluded that the U.S. intelligence community’s failure to prevent such acts of terrorism was partly due to the absence of a shared pool of data among its agencies. Similar concerns were later raised by the 9-11 Commission, which found that the Federal Bureau of Investigation (FBI) had “a limited capacity to share information both internally and externally.”

Partnering with PayPal engineer Nathan Gettings and Stanford University students Joe Lonsdale and Stephen Cohen, Thiel set out to develop counterterrorism technology based on PayPal’s fraud detection algorithms.

This effort culminated in the founding of Palantir Technologies (PLTR) in 2003, with Karp on board as a cofounder. As the company searched for a permanent CEO, Karp emerged as an unlikely candidate. Although he lacked expertise in business and technology, Gettings, Lonsdale, and Cohen were impressed by his ability to quickly grasp the problems Palantir aimed to solve and effectively communicate the company’s mission and philosophy. Karp accepted the role of CEO in 2004. 

Over the following two decades, Karp led Palantir’s growth into a multibillion-dollar company and a major provider of data analysis software. Palantir expanded its reach in the commercial sector, played a role in international responses to the COVID-19 pandemic, debuted on the stock market with a valuation exceeding $20 billion, and emerged as a major provider of artificial intelligence software. Its customers include government agencies, local law enforcement, international governments, and major corporations.

As Palantir’s prominence grew, Karp became a polarizing public figure, drawing criticism for his outspoken views and evolving political positions. Once a major Democratic donor who supported the 2024 presidential campaigns of Joe Biden and Kamala Harris, Karp contributed $1 million to Donald Trump’s inauguration fund after Trump’s election to a second term.

During Trump’s second administration, Palantir expanded its work with federal agencies, including U.S. Immigration and Customs Enforcement (ICE) and government data integration projects, drawing criticism from civil-liberties advocates and immigration groups. These developments, along with Palantir’s longstanding relationships with military and security organizations, intensified scrutiny of both Karp and the company’s role in government surveillance and enforcement efforts.

In 2025, Karp coauthored The Technological Republic: Hard Power, Soft Belief, and the Future of the West, a treatise arguing that Western liberal democracies must form closer ties with big tech in order to defend their freedoms and cultural values.

The book drew renewed criticism in April 2026 after Palantir posted a 22-point summary of its central arguments on X (formerly Twitter). The summary included such statements as “No other country in the history of the world has advanced progressive values more than [the U.S.],” “Silicon Valley must play a role in addressing violent crime,” and “Some cultures have produced vital advances; others remain dysfunctional and regressive.”

In 2026, Forbes estimated Karp’s net worth at more than $13 billion, making him the wealthiest Black person in the United States and the second wealthiest Black billionaire in the world.