Forbes estimated Daniel Nadler's net worth at $7.6 billion in an article dated 21 January 2026, after OpenEvidence reached a $12 billion valuation. Forbes said the news roughly doubled his wealth.
The wealth comes from his stake in OpenEvidence, which is not listed on any exchange. The company raised $75 million at $1 billion in February 2025 and $210 million at $3.5 billion in July 2025. A $200 million Series C at $6 billion followed in October 2025.
A $250 million Series D in January 2026 set the $12 billion valuation. A further $250 million round in September 2026 valued the company at $15 billion, which is after the Forbes estimate.
Nadler earlier co-founded Kensho in 2013, which S&P Global bought in 2018 for a reported $550 million. Because OpenEvidence is private, his fortune has no daily price.