SoftBank
Japanese investment holding conglomerate founded by Masayoshi Son; primary backer of the Stargate AI programme.
SoftBank committed up to €75 billion to build 5 gigawatts of French data-centre capacity on 30 May 2026, hedging a Stargate programme whose partner OpenAI has already cut its US compute target by $800 billion.
Last refreshed: 22 September 2026 · Appears in 3 active topics
With €75bn in France and $500bn in the US, is Masayoshi Son overextended or ahead of the curve?
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UK Startups and InnovationBackground
SoftBank Group Corp is a Japanese multinational conglomerate founded in 1981 by Masayoshi Son and headquartered in Tokyo. It pivoted from software distribution into telecoms and technology investment, becoming best known for its Vision Fund, a roughly $100 billion vehicle backed partly by Saudi Arabia's Public Investment Fund, holding stakes in companies including OpenAI and ARM Holdings.
As a holding company, SoftBank's value is marked to market and hostage to global equity sentiment: its shares fell 11% in a single session during the March 2026 Iran oil shock, amplifying the Nikkei's worst day since January. The Vision Fund model amplifies returns in calm conditions and creates outsized downside in macro shocks.
SoftBank's largest current commitment is underwriting Stargate, the flagship US AI infrastructure programme, a bet that represents Son's most ambitious capital deployment since the WeWork era. Iran's Revolutionary Guards named Stargate's UAE component a military target in April 2026, and subsequent strikes hit Oracle infrastructure in Bahrain and Dubai, adding a geopolitical risk layer to a programme already under financial scrutiny.
SoftBank hedges Stargate with a France bet
SoftBank remains the primary financial backer of Stargate, the $500 billion US AI infrastructure programme, but only the first $100 billion was ever described as committed, and by April 2026 just 1.2 gigawatts of a nominal 10 gigawatts was operational. OpenAI then told investors it would spend roughly $600 billion through 2030, down from a $1.4 trillion nameplate, dropping its Abilene, Texas lease and pausing UK and Norway sites.
On 30 May SoftBank answered by committing up to €75 billion to build 5 gigawatts across three sites in northern France, with EDF supplying nuclear baseload at Bouchain. The move diversifies SoftBank's AI infrastructure exposure away from a single US partner whose own ambition has just been cut by more than half.
Reference
Is SoftBank Group the same company as SoftBank Corp?
What is SoftBank's Vision Fund and how big is it?
Why did SoftBank choose France for its European data-centre expansion?
What is SoftBank building in France and how much is it spending?
Did OpenAI cut the Stargate compute target and what does that mean for SoftBank?
What is Stargate and who is involved?
Can SoftBank fund the full $500 billion Stargate commitment?
Why did Iran target Stargate data centres and how does SoftBank respond?
Why did SoftBank shares fall 11% in one day?
