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Joseph Tsai
Joseph Chung-Hsin Tsai (Chinese: 蔡崇信; Pe̍h-ōe-jī: Chhòa Chông-sìn; born January 1964) is a Taiwanese-Canadian billionaire business magnate, lawyer, and philanthropist. He is a co-founder and chairman of the Chinese multinational technology company Alibaba Group. Tsai owns the Brooklyn Nets of the National Basketball Association (NBA), the New York Liberty of the Women's National Basketball Association (WNBA), the San Diego Seals of the National Lacrosse League (NLL), and has interests in several other professional sports franchises.
Tsai was born in Taipei, Taiwan, to Paul C. Tsai (Chinese: 蔡中曾; Pe̍h-ōe-jī: Chhòa Tiong-cheng, d.2013), a second-generation lawyer, and Ruby Tsai. He has three younger siblings: Eva, Vivian, and Benjamin.
Tsai's grandfather, Ruchin Tsar, left the Chinese mainland in 1948, part of the Kuomintang exodus of millions fleeing the communists as the country's civil war ended. Tsar had been an adviser to the Kuomintang government of nationalist leader Chiang Kai-shek, who, in the aftermath of the war, established the Republic of China as a one-party state in Taiwan.
At age 13, Tsai was sent to the U.S. to attend the Lawrenceville School in Lawrenceville, New Jersey, where he played both lacrosse and football (inside linebacker) and was a member of Cleve House.[citation needed] Tsai enrolled at his father's alma mater, Yale University, in fall 1982. He played for the Yale varsity lacrosse team for four years and has remained a supporter of the team.
In 1986, Tsai earned a Bachelor of Arts (B.A.) in economics and East Asian studies from Yale University. He then earned a Juris Doctor (J.D.) from Yale Law School, where he was articles editor of the Yale Law & Policy Review, in 1990.
Tsai became a tax associate at the white-shoe law firm of Sullivan & Cromwell after graduation and was admitted as an attorney to the New York bar on 6 May 1991. After three years at the law firm, he switched to private equity and joined Rosecliff, Inc., a small management buyout firm based in New York, as vice president and general counsel. He left for Hong Kong in 1995 to join the Swedish Wallenberg family's investment conglomerate Investor AB, where he was responsible for its Asian private equity investments.
It was in this role that he first met Jack Ma in 1999 in Hangzhou after being introduced by a friend who was trying to sell his own company to Ma. Tsai was impressed with Ma's idea to create an international import and export marketplace, as well as his charismatic personality, but it was Ma's followers and their energy and enthusiasm that ultimately convinced Tsai. Later that year he quit the $700,000-a-year job at Investor AB and offered to join Ma as a member of the founding team. At the time each of Alibaba's 18 cofounders—of which Tsai was the only Western-educated member—accepted a salary of only $600 a year. He was chief operating officer, chief financial officer, executive vice chairman and founding board member. He single-handedly established Alibaba's financial and legal structure, since no other member of the team had any experience in venture capital or law. He was Alibaba's executive vice chairman since May 2013 and became chairman of the company in September 2023. He has become the second-largest individual shareholder of Alibaba after Ma. In 2025, he remained Alibaba Group chairman. Tsai's net worth in 2022 was estimated to be US$8.1 billion. In 2025, he was ranked #8 on Forbes list of Hong Kong's 50 Richest, with an estimated net worth of $11.8 billion.
In September 2019, Tsai became the owner of the Brooklyn Nets of the NBA and chairman of Barclays Center. He initially invested in the NBA team in October 2017, purchasing a 49% stake in the Nets from Russian billionaire Mikhail Prokhorov in a deal that valued the team at $2.3 billion, with the option to buy the remaining stake of the team no later than 2021. Tsai exercised that option in August 2019, and at the same time, bought the Nets' arena from Prokhorov for nearly $1 billion in a separate deal.
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Joseph Tsai
Joseph Chung-Hsin Tsai (Chinese: 蔡崇信; Pe̍h-ōe-jī: Chhòa Chông-sìn; born January 1964) is a Taiwanese-Canadian billionaire business magnate, lawyer, and philanthropist. He is a co-founder and chairman of the Chinese multinational technology company Alibaba Group. Tsai owns the Brooklyn Nets of the National Basketball Association (NBA), the New York Liberty of the Women's National Basketball Association (WNBA), the San Diego Seals of the National Lacrosse League (NLL), and has interests in several other professional sports franchises.
Tsai was born in Taipei, Taiwan, to Paul C. Tsai (Chinese: 蔡中曾; Pe̍h-ōe-jī: Chhòa Tiong-cheng, d.2013), a second-generation lawyer, and Ruby Tsai. He has three younger siblings: Eva, Vivian, and Benjamin.
Tsai's grandfather, Ruchin Tsar, left the Chinese mainland in 1948, part of the Kuomintang exodus of millions fleeing the communists as the country's civil war ended. Tsar had been an adviser to the Kuomintang government of nationalist leader Chiang Kai-shek, who, in the aftermath of the war, established the Republic of China as a one-party state in Taiwan.
At age 13, Tsai was sent to the U.S. to attend the Lawrenceville School in Lawrenceville, New Jersey, where he played both lacrosse and football (inside linebacker) and was a member of Cleve House.[citation needed] Tsai enrolled at his father's alma mater, Yale University, in fall 1982. He played for the Yale varsity lacrosse team for four years and has remained a supporter of the team.
In 1986, Tsai earned a Bachelor of Arts (B.A.) in economics and East Asian studies from Yale University. He then earned a Juris Doctor (J.D.) from Yale Law School, where he was articles editor of the Yale Law & Policy Review, in 1990.
Tsai became a tax associate at the white-shoe law firm of Sullivan & Cromwell after graduation and was admitted as an attorney to the New York bar on 6 May 1991. After three years at the law firm, he switched to private equity and joined Rosecliff, Inc., a small management buyout firm based in New York, as vice president and general counsel. He left for Hong Kong in 1995 to join the Swedish Wallenberg family's investment conglomerate Investor AB, where he was responsible for its Asian private equity investments.
It was in this role that he first met Jack Ma in 1999 in Hangzhou after being introduced by a friend who was trying to sell his own company to Ma. Tsai was impressed with Ma's idea to create an international import and export marketplace, as well as his charismatic personality, but it was Ma's followers and their energy and enthusiasm that ultimately convinced Tsai. Later that year he quit the $700,000-a-year job at Investor AB and offered to join Ma as a member of the founding team. At the time each of Alibaba's 18 cofounders—of which Tsai was the only Western-educated member—accepted a salary of only $600 a year. He was chief operating officer, chief financial officer, executive vice chairman and founding board member. He single-handedly established Alibaba's financial and legal structure, since no other member of the team had any experience in venture capital or law. He was Alibaba's executive vice chairman since May 2013 and became chairman of the company in September 2023. He has become the second-largest individual shareholder of Alibaba after Ma. In 2025, he remained Alibaba Group chairman. Tsai's net worth in 2022 was estimated to be US$8.1 billion. In 2025, he was ranked #8 on Forbes list of Hong Kong's 50 Richest, with an estimated net worth of $11.8 billion.
In September 2019, Tsai became the owner of the Brooklyn Nets of the NBA and chairman of Barclays Center. He initially invested in the NBA team in October 2017, purchasing a 49% stake in the Nets from Russian billionaire Mikhail Prokhorov in a deal that valued the team at $2.3 billion, with the option to buy the remaining stake of the team no later than 2021. Tsai exercised that option in August 2019, and at the same time, bought the Nets' arena from Prokhorov for nearly $1 billion in a separate deal.