Brett Harrison

Harrison was born in New York City and raised in Dix Hills, New York.[4] He graduated from Half Hollow Hills High School West in 2006. While in high school, his mathematical research was published in American Mathematical Monthly.[5]

He attended Harvard University, where he earned an M.S. and B.A. in computer science.[6] His studies focused on artificial intelligence.[7] He completed Math 55 during his time at Harvard.[8]

Harrison joined Jane Street Capital as an ADR trader in 2010.[9][7] He later went on to lead Jane Street’s algorithmic trading system development groups. While at Jane Street, he met and worked with Sam Bankman-Fried.[10]

He was subsequently a technology executive at Citadel Securities. At Citadel he managed the company’s Options, ETF, ADR and OTC technology departments.[11]

In May 2021, Harrison became President of FTX US.[12] While at FTX US he established the company’s regulated business operations and opened its headquarters in Chicago.[6] In 2022 he built and managed the launch of the company’s US retail stock brokerage and trading platform.[13][14]

Harrison announced his resignation from FTX US on September 27, 2022,[15] after protracted disagreements with Bankman-Fried over formal management structure and lack of delegation of authority at the company.[16]

In December 2022, Bloomberg reported that Harrison was raising capital for a new trading technology venture.[17] In January 2023, he closed a $5 million seed round and founded Architect Financial Technologies, a company to develop institutional-grade trading infrastructure.[2] Architect’s investors include Coinbase, Circle, and Anthony Scaramucci.[18] The company became a CFTC-regulated derivatives broker in September 2023.[19]

Harrison is Jewish.[20] He is vegan and owns numerous rescue dogs and cats.[21][22]

He is married to Hannah Harrison. In January 2019, they adopted a child with congenital amputations from China.[23] They adopted their second child from Thailand in 2023.