Why VC leg­end Bob Nelsen is mak­ing the biggest ini­tial bet of his 37-year ca­reer on Xaira

In the 37 years since co-found­ing ARCH Ven­ture Part­ners, Bob Nelsen has built a rep­u­ta­tion for plac­ing head-turn­ing bets on ideas that car­ry huge amounts of risk and re­ward.

His lat­est — on AI start­up Xaira Ther­a­peu­tics — is both the biggest bet of his ca­reer and in ARCH’s his­to­ry for a new com­pa­ny. Xaira is launch­ing with over $1 bil­lion in com­mit­ted cap­i­tal, End­points News ex­clu­sive­ly re­port­ed Tues­day, and ARCH will con­tribute over $200 mil­lion, Nelsen said.

Unlock this article instantly by becoming a free subscriber.

You’ll get access to free articles each month, plus you can customize what newsletters get delivered to your inbox each week, including breaking news.

SIGN UP LOG IN BECOME A PREMIUM SUBSCRIBER