Masayoshi Son
Source of wealth: Telecom, Investments
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Biography
Masayoshi Son founded and runs investment giant SoftBank Group, which reported net profit of 3.2 trillion yen ($20.5 billion) on sales of 5.7 trillion yen ($37 billion) for the nine months ended December 31, 2025.
Investors in Son's Vision Fund 1 include Apple, Qualcomm, Foxconn, the family office of billionaire Larry Ellison and Saudi Arabia's sovereign fund.
The Vision Funds have invested in over 400 companies, including ride-share firm Grab, Korean e-commerce leader Coupang and India's food-delivery platform Swiggy.
Son is investing billions of dollars in AI, including in the $500 billion Stargate Project, in partnership with OpenAI, Oracle and MGX, to build AI infrastructure in the U.S.
In November 2025, SoftBank sold its entire stake in chipmaker Nvidia for nearly $6 billion to fund its investment in OpenAI. It plans to invest $30 billion in three tranches between April and October 2026.
Perspective on their fortune
Gold
Everyday luxury
A Masayoshi Son's fortune is equivalent to 502 of gold, but this may be difficult to value, as we don't usually have a handful of gold bars in our piggy bank.
A standard gold ring typically weighs between 4 and 7 grams. Let's say this one weighs 5 grams. It's usually 18k gold.
Based on today's gold price (not taking into account the jeweler's fee, shipping, or anything else), that gold ring would be worth $556.3
Masayoshi Son could buy 133,849,157 gold rings. That's a lot of fingers and a lot of gifts!!
And if the number of rings is difficult to visualize, all these rings would need 24 trucks to transport them, But we can be almost certain that Masayoshi Son will have enough left over to pay for the gas for those trucks.
Health
The price of life
Let's compare Masayoshi Son's fortune with the healthcare spending of a huge country
Masayoshi Son could fund the entire healthcare system of DR Congo with a population of over 105,800,000 of inhabitants for approximately 33.5 years.
But even if we compare their fortune to that of a rich country
At the other extreme, Masayoshi Son could cover the health expenditure of Luxembourg, considered the world's most heavily invested health system, for 14.8 years
Education
Buying the future
Lowest education spending
Masayoshi Son could assume the entire cost of the education system of Nigeria, the most populous country in Africa, with more than 243,000,000 inhabitants for 21.9 years.
Highest education spending
But not only could he assume the cost of a poor country, Luxembourg is considered the country with the highest per capita investment in education in the world, Masayoshi Son could pay for it in full for 29.8 years.
Research
The monopoly of progress
Lowest research spending
Masayoshi Son could fully fund the state research budget of Pakistan, the fifth most populous country in the world with more than 260,000,000 of inhabitants, for 125.4 years.
Highest research spending
But even if we compare the total wealth of Masayoshi Son with Israel, the country that currently invests the most per capita in research in the world, it could assume the total cost of the system for 2.8 years.
Financial Assets
Monthly wealth history
Fortune comparison
Historical data not available for comparison