9984 / 9434 · Tokyo Stock Exchange

Who owns SoftBank?

1 of the world’s richest people holds SoftBank in our tracked profiles.

About

SoftBank Group reports its net asset value as its holdings minus net debt. As of June 30, 2026, those holdings were led by Arm, then the SoftBank Vision Funds, SoftBank Corp. and its Latin America Funds.

Investment holding company

Source: SoftBank Group: Net Asset Value per Share ↗. Summary in our own words.

Billionaire holders

Masayoshi SonAI & tech
Founder32.73% (1,865,511 thousand shares, principal-shareholder table) · as of Mar 2026
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Entry
SoftBank Group Corp.
Ticker
9984
Exchange
Tokyo Stock Exchange
Role
Founder; Representative Director, Corporate Officer, Chairman & CEO; largest shareholder
Stake
32.73% (1,865,511 thousand shares, principal-shareholder table)
Stake as of
2026-03-31
source ↗
Telecom subsidiary of SoftBank GroupSoftBank Corp. (SBKK)
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Entry
SoftBank Corp. (SBKK)
Ticker
9434
Exchange
Tokyo Stock Exchange
Role
Telecom subsidiary of SoftBank Group (Son was CEO of the mobile business until 2021)
source ↗

Each row is a sourced entry from that person’s profile. Stakes are as of the date shown, not today.

Recent SEC filings

No Form 4 insider trades in SoftBank from the holders above in the last 90 days.

Form 4 insider trades post within 2 business days. New to filings? Read Filings 101.

Recent moves

Nov 8, 2026 edition

Masayoshi SonAcquisitionAI & techSFTBYAI read · ▼ Beijing says no

China blocks SoftBank's $5.4 billion ABB Robotics deal

The move

China's foreign-investment security review office told SoftBank it would block the firm's planned $5.4 billion purchase of ABB's robotics division, ABB confirmed Nov. 5. The deal had already cleared China's competition review in February and the European Commission in March. ABB said the two companies are "in close dialogue and are working constructively on the transaction"; neither company commented further.

Why it matters

Reports say Chinese regulators were concerned that robotics data from the unit could be sent overseas and used to train AI models, including OpenAI's, in which SoftBank is a major investor. It is the second major tech deal China has blocked this year, after unwinding Meta's purchase of AI startup Manus.

The bear case

SoftBank is reportedly weighing whether to reapply or spin off part of the business to win approval, so the deal may not be dead yet.

What to watch

Whether SoftBank resubmits the deal in a restructured form.

Source · Robotics 24/7Read original ↗Report an error

Nov 4, 2026 edition

Masayoshi SonPolicyAI & tech9984.TAI read · ▼ AI regulation fears

SoftBank slumps as Democratic sweep stokes AI regulation fears

The move

SoftBank Group shares slumped as much as 8% in early Tokyo trading Wednesday as Japan's Nikkei 225 fell as much as 3.6% to its lowest level since early May, Euronews reported, after Democrats won control of the U.S. Senate and were on track to take the House. Investors feared a Democratic sweep of Congress could bring more regulation and restrictions on AI development, compounding existing doubts about when heavy AI spending will pay off. The yen also strengthened against the dollar, pressuring Japanese exporters.

Why it matters

SoftBank's huge bets on OpenAI and AI chips make it one of the companies most exposed anywhere to a shift in U.S. AI policy, so investors read the election results as a direct risk to Son's biggest wagers.

The bear case

The sharp early-session drop reflects a reaction to political odds, not a confirmed policy change, and shares pared some of the loss as the session went on.

What to watch

SoftBank's fiscal second-quarter results, due Nov. 10, and whether a divided Congress actually produces new AI or data-center rules.

Source · EuronewsRead original ↗Report an error

Oct 30, 2026 edition

Masayoshi SonInvestmentAI & techSFTBYAI read · ▲ Quantum bet pays off

SoftBank-backed quantum project wins Japanese funding

The move

A materials-research project backed by SoftBank and five other Japanese companies - Toppan Holdings, Aisin, Asahi Kasei, AGC and DIC - was selected for funding by Japan's NEDO technology agency on October 28. The project, running through fiscal 2028, aims to combine quantum computing with AI screening to speed up materials research and development. SoftBank shares rose about 4.8% that day.

Why it matters

The government-backed funding adds a new angle to SoftBank's AI bet beyond its existing stakes in Arm and OpenAI.

The bear case

The platform's three-year commercialization goal is early-stage, and government-funded research projects don't guarantee a near-term payoff.

What to watch

SoftBank's next earnings report, scheduled for November 10.

Source · TradingKeyRead original ↗Report an error

Oct 25, 2026 edition

Masayoshi SonIPO / MarketsAI & tech9984.TAI read · ▼ Debt worries

SoftBank shares fall as AI debt worries deepen

The move

SoftBank Group shares fell 6.9% in Tokyo on Oct. 22 to close at 4,305 yen, about half their record closing price from June, as rising borrowing costs raised doubts about the sustainability of Masayoshi Son's heavy AI investment spending.

Why it matters

The decline reflects growing investor concern about how SoftBank will keep funding its enormous bets on OpenAI and other AI companies as borrowing costs climb.

The bear case

SoftBank's underlying AI stakes, including in OpenAI, haven't been written down; the drop is about financing worries, not a confirmed loss in value.

What to watch

SoftBank's next earnings report, due Nov. 10, 2026, for an update on its OpenAI funding commitments.

Source · GuruFocusRead original ↗Report an error

Oct 24, 2026 edition

Masayoshi SonMarketsAI & techSFTBYAI read · ▼ AI debt worry

SoftBank shares slide as AI debt worries deepen

The move

SoftBank Group shares fell sharply on Thursday, leaving the stock roughly half of its June peak, as worries deepened about the sustainability of its large AI bets, including its stakes in Arm and OpenAI. Credit-default swaps on SoftBank's debt climbed to their highest level in years.

Why it matters

Investors have grown more skeptical that SoftBank's AI investments will generate returns fast enough to cover the debt used to fund them, after reports questioned OpenAI's actual revenue run rate.

The bear case

SoftBank's holdings in Arm and OpenAI still carry enormous paper value, and founder Masayoshi Son has said he expects market corrections to be the best buying opportunities.

What to watch

SoftBank's next update on its OpenAI commitment and credit-rating outlook.

Source · BloombergRead original ↗Report an error

Oct 22, 2026 edition

Masayoshi SonOtherAI & techSFTBYAI read · ▼ Credit markets flashed first, equity followed

SoftBank's market value halves from its June peak

The move

SoftBank Group shares fell 6.86% to 4,305 yen on Oct. 22 in Tokyo, part of a broader sell-off in Asian tech and chip stocks that also hit Samsung, SK Hynix and Kioxia. The drop leaves SoftBank roughly 50% below the record high it set on June 2, a slide tied to investor worry over its heavy borrowing to fund AI bets, including its OpenAI and Arm stakes. The Nikkei 225 fell 2.65% the same day, its first close below 63,000 since mid-September, and South Korea's Kospi dropped 3.52%.

Why it matters

SoftBank's own share price is now reflecting the same AI-financing worry that has already pushed up the cost of insuring its debt against default this month.

The bear case

A single volatile trading day doesn't erase SoftBank's underlying stakes in OpenAI and Arm, and the stock has swung sharply in both directions all year on shifting AI sentiment.

What to watch

SoftBank's next quarterly results, due Nov. 10, for an update on how its AI bets and borrowing are performing.

Source · TradingKeyRead original ↗Report an error

Oct 21, 2026 edition

Masayoshi SonOtherAI & techSFTBYAI read · ▼ Debt markets pricing in AI concentration risk

SoftBank's credit risk hits its highest since 2022

The move

SoftBank Group's five-year credit-default-swap spread climbed to about 432 basis points on Oct. 20, a level unseen since late 2022, according to Bloomberg, as investors weigh the company's heavy financial commitments to OpenAI against reports it is in early talks to acquire security firm Allied Universal for about $18 billion. SoftBank has already raised a $40 billion bridge loan and a separate $10 billion loan collateralized by its OpenAI stake to fund its AI investments, and its OpenAI stake is on track to reach roughly $64.6 billion by October.

Why it matters

Rising default-insurance costs signal that credit investors see SoftBank's AI bets, and the debt funding them, as increasingly concentrated risk.

The bear case

SoftBank's stock has still risen sharply this year on optimism about its OpenAI stake, even as its credit spreads widen.

What to watch

Whether SoftBank confirms or drops the reported Allied Universal acquisition talks.

Source · BloombergRead original ↗Report an error

Oct 18, 2026 edition

Masayoshi SonAcquisitionAI & techSFTBYAI read · ▼ Diversifying bet

SoftBank shares fall on report of Allied Universal talks

The move

SoftBank's US-listed shares fell 9.4% on October 16 after reports surfaced that it's in early talks to acquire security-services firm Allied Universal, a deal that could value the company at about $18 billion. The talks are preliminary, with no agreement reached.

Why it matters

Investors already wary of SoftBank's heavy borrowing for AI bets reacted to a large deal outside that core strategy with more uncertainty, not less.

The bear case

Nothing is signed yet, and security services is a steady, well-understood business that could diversify SoftBank away from its volatile AI holdings.

What to watch

Whether SoftBank and Allied Universal confirm a deal and a price.

Source · GuruFocusRead original ↗Report an error

Oct 16, 2026 edition

Masayoshi SonOtherAI & techSFTBYAI read · ▼ Bearish

SoftBank sinks as Asia tech stocks sell off

The move

SoftBank Group shares fell sharply this week as part of a broader Asia tech sell-off that also hit SK Hynix, Samsung and, in the US, Nvidia, AMD and Dell. The drop followed hotter-than-expected US inflation data that revived fears the Federal Reserve will keep interest rates higher, raising the cost of financing AI infrastructure.

Why it matters

SoftBank is a major OpenAI investor with further multibillion-dollar payments due, so worries about AI-funding costs and higher rates hit it harder than most.

The bear case

SoftBank's core Arm and Vision Fund holdings haven't changed; a rate-driven, one-week move isn't the same as a shift in the value of what SoftBank actually owns.

What to watch

SoftBank's next scheduled payment toward its OpenAI commitment.

Source · CNBCRead original ↗Report an error

Oct 14, 2026 edition

Masayoshi SonInvestmentAI & techSFTBYAI read · — Ambitious

SoftBank's Son seeks $100 billion from Gulf investors for AI

The move

The Financial Times reported on October 9 that SoftBank CEO Masayoshi Son is seeking up to $100 billion from Gulf investors to seed a new fund that would buy companies and upgrade them with AI and robotics, built around SoftBank's Roze unit. SoftBank did not comment, and Reuters said it could not independently verify the report.

Why it matters

Son has tapped Gulf wealth before, with Saudi Arabia's Public Investment Fund and the UAE's Mubadala both backing SoftBank's original Vision Fund, and he wants to take Roze public at a high valuation.

The bear case

The $100 billion is described as an aspiration with no commitments yet, and it would add more leverage to a company already carrying heavy debt from its OpenAI bet.

What to watch

Whether SoftBank secures any firm commitments from Gulf investors.

Source · DealStreetAsiaRead original ↗Report an error

Oct 10, 2026 edition

Masayoshi SonPolicyAI & tech9984.TAI read · — Do as I say

SoftBank's Son warns AI 'super dangerous' in wrong hands

The move

Speaking at a science forum in Kyoto on Oct. 4, Masayoshi Son said superintelligent AI could become "super dangerous" if it falls into the wrong hands, and called for countries to cooperate on controlling it. He announced no change to SoftBank's own AI spending.

Why it matters

It's a notably cautious tone from one of AI's biggest financial backers — Son has committed more than $64 billion to OpenAI alone and has dismissed bubble talk over the past year.

The bear case

The warning came with no funding pullback, safety program or investment condition attached, so it reads more as a policy talking point than a change in strategy.

What to watch

Whether Son's comments lead to any new safety commitments from SoftBank's AI portfolio companies.

Source · The Star (Malaysia)Read original ↗Report an error

Oct 7, 2026 edition

Masayoshi SonInvestmentAI & techPrivateAI read · ▲ Bullish

SoftBank completes final $10B tranche into OpenAI

The move

SoftBank completed the third and final $10 billion tranche of its $30 billion commitment to OpenAI's latest funding round on Oct. 1, deployed through SoftBank Vision Fund 2 in three installments of $10 billion each since April. SoftBank's cumulative investment in OpenAI now stands at $64.6 billion, for roughly a 13% stake. SoftBank funded part of the commitment with $11.1 billion raised last month in the largest high-yield corporate bond sale globally, and it canceled the remaining $10 billion of undrawn capacity on an earlier $40 billion bridge loan.

Why it matters

Son is finishing what he started rather than scaling back, even as he's publicly warned about AI safety risks this month — he's betting big on OpenAI specifically while urging caution on the technology generally.

The bear case

SoftBank is funding part of this with debt, and a stake in a company that doesn't trade publicly is much harder to value or exit than one of Son's listed holdings.

What to watch

Whether SoftBank discloses further follow-on commitments to OpenAI's next funding round.

Source · The Star (Malaysia)Read original ↗Report an error

Oct 6, 2026 edition

Masayoshi SonPolicyAI & tech9984.TAI read · — Cautious

SoftBank's Son warns 'superintelligence' could turn dangerous

The move

At a technology and society forum in Kyoto on Oct. 4, SoftBank's Masayoshi Son warned that 'superintelligence' in the wrong hands could become 'super dangerous' and said nations must cooperate rather than compete on AI safety, saying 'we don't have any more luxury of having human fight against human.' The warning comes even as SoftBank remains one of AI's biggest financial backers, having committed about $65 billion to OpenAI.

Why it matters

Son is one of AI's largest financial backers, so a public warning from him about safety risks carries more weight than typical outside commentary.

The bear case

Son has swung between AI boosterism and caution before, and the warning hasn't come with any sign SoftBank is slowing its own AI spending.

What to watch

Whether Son's call for global AI cooperation leads to any concrete policy proposal.

Source · Business TodayRead original ↗Report an error

Oct 5, 2026 edition

Masayoshi SonPolicyAI & tech9984.TAI read · — Caution

SoftBank's Son warns superintelligence could be 'super dangerous'

The move

Speaking at the Science and Technology in Society forum in Kyoto on October 4, SoftBank CEO Masayoshi Son said superintelligent AI in the wrong hands could become "super dangerous" and that nations need to build mutual trust to manage the technology safely, saying "we don't have any more luxury of having human fight against human." The forum also featured a 17-country initiative, announced by White House adviser Michael Kratsios, promoting AI to accelerate scientific research. Son still projects AI will contribute at least 20% of global GDP, about $46 trillion, by 2040.

Why it matters

The warning is notable from one of AI's biggest financial backers; SoftBank has committed nearly $65 billion to OpenAI.

The bear case

An AI financier warning about the risks of a technology he's aggressively funding can look like positioning rather than a real course change.

What to watch

Whether the 17-country Kyoto initiative leads to binding commitments.

Source · The StarRead original ↗Report an error

Oct 4, 2026 edition

Masayoshi SonInvestmentAI & tech9984.TAI read · ▲ Doubling down on OpenAI

SoftBank completes $30 billion OpenAI investment tranche

The move

SoftBank finished the final $10 billion installment of its $30 billion commitment to OpenAI's funding round on Oct 3. That brings SoftBank's total investment in OpenAI to $64.6 billion for roughly a 13% stake.

Why it matters

It's Masayoshi Son's biggest and most concentrated AI bet yet, funded partly through a record high-yield bond sale.

The bear case

OpenAI isn't profitable, and SoftBank is now deeply exposed to one company's valuation holding at $852 billion.

What to watch

OpenAI's next funding round or any update on its path to profitability

Source · Manila TimesRead original ↗Report an error

Oct 1, 2026 edition

Masayoshi SonInvestmentAI & tech9984.TAI read · ▲ Expensive conviction

SoftBank sells record $11.1 billion junk bond to fund AI bet

The move

SoftBank Group raised $11.1 billion in a dollar-and-euro junk bond sale around Sept. 24, which it called the largest high-yield corporate bond sale on record, surpassing Numericable Group's $10.9 billion issuance from 2014. The deal priced in five tranches, from a 3.5-year dollar note at 8.625% to a 7.5-year dollar note at 9.75%, plus two euro tranches at 7.125% and 8%. It follows a ¥1 trillion (about $6.3 billion) retail bond SoftBank sold earlier in September, as the company funds its roughly $64.6 billion commitment to OpenAI.

Why it matters

SoftBank has issued $14.6 billion in high-yield bonds in 2026 alone, about 63.4% of the entire Asia-Pacific and Japan junk-bond market this year, showing how much debt Masayoshi Son is taking on to fund his OpenAI bet rather than selling existing assets.

The bear case

Yields above 9% on some tranches show bond investors see real risk in lending to SoftBank for an AI bet that hasn't paid off yet; borrowing this expensive only works if OpenAI's valuation keeps climbing.

What to watch

OpenAI's progress toward an IPO, which SoftBank is counting on to justify the cost of this debt.

Source · Free Malaysia TodayRead original ↗Report an error

Sep 28, 2026 edition

Masayoshi SonIPO / MarketsAI & tech9984.TAI read · — Expensive conviction

SoftBank sells record $11.1 billion of bonds for its OpenAI bet

The move

SoftBank is selling $11 billion of bonds this week — $10 billion in dollar notes across three maturities plus €1 billion in euro notes across two — to partially fund a follow-on OpenAI investment closing next month, on top of nearly $65 billion it has already committed to the startup. It's SoftBank's biggest junk-bond deal of the year after a string of other debt raises, including a $5 billion expansion of its Arm Holdings margin loan.

Why it matters

It shows how much Masayoshi Son is willing to borrow, and at what cost, to keep funding OpenAI: yields on the notes are among the richest SoftBank has ever paid, and its 2031 dollar bond now yields 8.2%, up from 6.7% in January.

The bear case

Piling debt on debt to fund a stake in a company that still isn't public is a bet that OpenAI's eventual valuation outruns SoftBank's rising borrowing costs.

What to watch

Whether the bond deal closes at its full size and whether OpenAI's IPO timeline slips further.

Source · Business TodayRead original ↗Report an error

Sep 26, 2026 edition

Masayoshi SonInvestmentAI & tech9984.TAI read · ▲ Leveraged bet

SoftBank prices record $11.1B bond for OpenAI stake

The move

SoftBank priced $11.1 billion in dollar- and euro-denominated bonds on September 24, the largest high-yield corporate bond sale on record, with yields as high as 9.75%. The money funds a roughly $10 billion installment toward SoftBank's approximately $64.6 billion investment in OpenAI, which is due to close October 1.

Why it matters

It shows how much debt Son is willing to take on to fund SoftBank's AI bets, and investors are still lining up: SoftBank shares jumped more than 7% on the news when Japanese markets reopened.

The bear case

Paying up to 9.75% shows lenders are charging a steep premium given SoftBank's growing debt load and OpenAI's still-distant IPO.

What to watch

The bond's settlement on September 29 and the OpenAI investment closing October 1.

Source · American BazaarRead original ↗Report an error

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