Billionaire Profile
Masayoshi Son
Global Rank
#31

Image: Public domain | via Wikimedia Commons

Masayoshi Son

CEO, SoftBank Group Corp.
JP
Real-Time Net Worth
$53.7B
As of December 2025
Age
68
Source
Telecom, Investments
Industry
finance-investments
Citizenship
JP

Biography

Masayoshi Son is a prominent Japanese entrepreneur, investor, and philanthropist, renowned for founding SoftBank Group. Born on August 11, 1957, Son's career spans telecommunications and investments, making him a key figure in the finance and investments sector. His estimated net worth of $53.7 billion reflects his significant success. Son's journey includes pivotal investments in companies like Alibaba and a major role in the technology-focused Vision Fund. His leadership has driven SoftBank to become a global leader, with a career marked by bold strategies and substantial achievements in the tech industry.

Wealth Over Time

In-Depth Profile

Early Life

Masayoshi Son was born in Tosu, Saga Prefecture, Japan, on August 11, 1957. He is a third-generation Zainichi Korean who later became a naturalized Japanese citizen. His family faced discrimination, which influenced Son's drive and ambition. His father started an illegal sake business that eventually became successful enough for his family to own a car. At 16, he moved to the United States, where he studied English and computer science at the University of California, Berkeley, graduating in 1980 with a degree in economics.

Rise to Success

Son's entrepreneurial journey began early. While at Berkeley, he developed and sold an electronic translator to Sharp Corporation for $1.7 million. Upon returning to Japan, he founded SoftBank in 1981, initially as a software distributor. SoftBank rapidly expanded into publishing and telecommunications, becoming a major player in Japan's tech industry. Son's early investments in internet firms like Yahoo! and Alibaba were particularly lucrative, with his $20 million investment in Alibaba turning into a $60 billion stake.

Key Business Strategies

Son is known for aggressive investment strategies and a long-term vision. His leadership transformed SoftBank into an investment holding company, expanding its reach through acquisitions and venture capital. The SoftBank Vision Fund, launched in 2017, is a testament to his focus on emerging technologies, with investments in AI, robotics, and the Internet of Things. Son has a 29.95% stake in SoftBank.

Philanthropy

Son has made philanthropic contributions, including a 10 billion yen pledge to support victims of the 2011 Tōhoku earthquake and tsunami. He also founded the Masason Foundation in 2016, alongside Nobel laureate Shinya Yamanaka, to support young innovators.

Career Milestones

1981

Founded SoftBank

Established SoftBank as a software distributor in Tokyo.

1999

Invested in Alibaba

Made a $20 million investment in Alibaba, which grew to a significant stake.

2016

Acquired Arm Holdings

SoftBank acquired ARM Holdings for £24 billion.

2017

Launched Vision Fund

SoftBank launched the $100 billion Vision Fund.

2021

Stepped down as CEO of SoftBank Mobile

Stepped down as CEO of SoftBank Mobile.

Philanthropy & Social Impact

Disaster Relief

Tōhoku earthquake and tsunami

$10B Yen

Pledged 10 billion yen to support victims.

Education and Innovation

Masason Foundation

Undisclosed

Founded to support young innovators worldwide.

Business Philosophy & Leadership

Notable Quotes

""You are a genius, No. 1 in Japan; you'll be a big hit.""

""If I had stayed all the time in Japan, I probably would have become much more conservative, just as other Japanese.""

Leadership Principles

Turn adversity into a weapon

Use challenging experiences as a driving force.

Ask for money and get advice.

Seek both financial and strategic guidance.