Net worth
$72.6B
Forbes Real-Time · as of Sep 24, 2026
Latest moves
No moves from Masayoshi Son in the digest yet. The archive grows every morning.
Recent SEC filings
SEC filings · last 90 days
Form 4 insider trades post within 2 business days. 13F fund holdings can arrive 45 days after quarter end. New to filings? Read Filings 101.
Footprint
Companies
SoftBank Group Corp.9984 · Tokyo Stock Exchange · Founder · 32.73% · as of Mar 2026
source ↗More
- 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
Arm Holdings plcARM · Nasdaq · Chairman of the Board · ~86.4% · as of May 2026 · $306.34 ▼ 7.88%
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- Ticker
- ARM
- Exchange
- Nasdaq
- Role
- Chairman of the Board; SoftBank Group beneficially owns ~86.4% (held of record by Kronos II LLC; Son disclaims beneficial ownership)
- Stake
- ~86.4% held by SoftBank Group
- Stake as of
- 2026-05-21
PayPay CorporationNasdaq Global Select Market · SoftBank Group subsidiary
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- Exchange
- Nasdaq Global Select Market
- Role
- SoftBank Group subsidiary; IPO closed March 2026 at $16/ADS, SVF II Piranha sold 23.9M ADSs
SB Energy, Inc.SBE (proposed) · Nasdaq Global Select Market / Nasdaq Texas (proposed) · SoftBank Group subsidiary
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- Ticker
- SBE (proposed)
- Exchange
- Nasdaq Global Select Market / Nasdaq Texas (proposed)
- Role
- SoftBank Group subsidiary; S-1 filed 2026-09-01 for IPO
Ampere Computing Holdings LLCWholly owned SoftBank Group subsidiary · 100% · as of Nov 2025
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- Role
- Wholly owned SoftBank Group subsidiary; acquisition ($6.5B all-cash) completed 2025-11-25
- Stake
- 100% (SoftBank Group)
- Stake as of
- 2025-11-26
SoftBank Corp. (SBKK)9434 · Tokyo Stock Exchange · Telecom subsidiary of SoftBank Group
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- Ticker
- 9434
- Exchange
- Tokyo Stock Exchange
- Role
- Telecom subsidiary of SoftBank Group (Son was CEO of the mobile business until 2021)
LY Corporation4689 · Tokyo Stock Exchange · Consolidated subsidiary of SoftBank…
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- Ticker
- 4689
- Exchange
- Tokyo Stock Exchange
- Role
- Consolidated subsidiary of SoftBank Group (LINE/Yahoo Japan); acquiring more of LINE MAN (Thailand)
SoftBank Vision Fund 1 / Vision Fund 2 / LatAm FundsSoftBank Group investment funds
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- Role
- SoftBank Group investment funds; OpenAI investment made via Vision Fund 2
SB Neo, Inc.US neocloud company formed July 2026… · 49% · as of Jul 2026
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- Role
- US neocloud company formed July 2026: 51% SoftBank Corp., 49% SoftBank Group
- Stake
- 49% SBG / 51% SoftBank Corp.
- Stake as of
- 2026-07-02
Stargate (OpenAI/SoftBank/Oracle/MGX AI infrastructure venture)Son named chairman
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- Role
- Son named chairman (Jan 2025); SoftBank a lead partner
Fukuoka SoftBank HawksOwner/director
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- Role
- Owner/director; SoftBank group has owned the NPB team since 2005
Stakes
OpenAI Group PBC (via SoftBank Vision Fund 2)~13% · as of Feb 2026
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- Stake
- ~13% expected after $30B follow-on (cumulative $64.6B); tranches Apr 1 and Jul 1 2026 executed, third $10B tranche due Oct 1 2026
- Stake as of
- 2026-02-27
Intel Corp. (SoftBank Group 13F)INTC · 86,956,522 shares (~$12.1B… · as of Jun 2026 · $127.39 ▲ 3.91%
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- Ticker
- INTC
- Stake
- 86,956,522 shares (~$12.1B reported value)
- Stake as of
- 2026-06-30
T-Mobile US (SoftBank Group 13F)TMUS · 10,000,000 shares (largely… · as of Jun 2026 · $165.35 ▼ 0.19%
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- Ticker
- TMUS
- Stake
- 10,000,000 shares (largely sold down from ~24% post-Sprint merger)
- Stake as of
- 2026-06-30
Symbotic Inc. (SoftBank Group 13F)SYM · ~39.8M shares across three lines · as of Jun 2026 · $44.04 ▲ 0.80%
source ↗Klarna Group plc (SoftBank Group 13F)KLAR · 15,400,224 shares · as of Jun 2026 · $12.87 ▼ 0.54%
source ↗Webtoon Entertainment (SoftBank Group 13F)WBTN · 31,432,480 shares · as of Jun 2026 · $10.90 ▲ 1.49%
source ↗Inter & Co (SoftBank Group 13F)INTR · 60,506,636 shares · as of Jun 2026 · $5.06 ▼ 3.44%
source ↗Taiwan Semiconductor ADS (SoftBank Group 13F)TSM · 565,000 ADS · as of Jun 2026 · $451.15 ▲ 1.03%
source ↗Alibaba Group (historic; SoftBank's $20M 2000 bet, 27% stake by 2018, since largely sold)BABA · 27% · as of 2018 · $110.63 ▼ 0.15%
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- Ticker
- BABA
- Stake
- 27% (as of 2018)
- Stake as of
- 2018
Investment vehicles
SoftBank Group Corp.holding co · CIK 0001065521 · Files 13F
source ↗More
- Type
- holding co
- Notes
- 13F-HR filer; Q2 2026 13F (filed 2026-08-14) lists 33 positions worth ~$18.2B, dominated by Intel
Son Asset Management (孫アセットマネージメント)family office
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- Type
- family office
- Notes
- Son's personal asset-management company, established May 1998; Son is representative director
Kronos II LLCholding co
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- Type
- holding co
- Notes
- Indirect wholly owned SBG subsidiary holding 922,733,999 Arm ordinary shares (per Son's Arm Form 3, 2026-03-18); 769,029,000 Arm shares pledged under SoftBank Group margin facility
SB Investment Advisers (US) Inc.fund · CIK 0001730859
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- Type
- fund
- Notes
- Vision Fund adviser; files 13F-NT (notice) filings, not 13F-HR
SB Northstarfund
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- Type
- fund
- Notes
- SBG asset-management subsidiary for listed-stock trading; SBG counts its share of SB Northstar NAV in 'Others'
Private deals
SoftBank agreed $30B follow-on investment in OpenAI via Vision Fund 2 (cumulative $64.6B, ~13%)Feb 2026
source ↗Executed second $10B OpenAI tranche, funded by bridge loanJul 2026
source ↗Agreed to buy DigitalBridge Group (NYSE: DBRG) for ~$4.0B enterprise value; DBRG filed Form 25 delisting its…Dec 2025
source ↗More
- In full
- Agreed to buy DigitalBridge Group (NYSE: DBRG) for ~$4.0B enterprise value; DBRG filed Form 25 delisting its preferreds on 2026-09-22
- Date
- 2025-12-29
Agreed to acquire ABB's robotics business for $5.375B; closing expected mid-to-late 2026Oct 2025
source ↗Completed $6.5B acquisition of Ampere ComputingNov 2025
source ↗PayPay Nasdaq IPO closed; 63.2M ADSs at $16 incl. 23.9M sold by SVF II PiranhaMar 2026
source ↗PayPay to acquire 70.2% of T&D Financial Life Insurance from T&D HoldingsJun 2026
source ↗OpenAI and SoftBank each invested $500M in SB Energy (Stargate partner)Jan 2026
source ↗Committed up to EUR 75B for 5 GW of AI data centers in France (first phase EUR 45B, Hauts-de-France)May 2026
source ↗Real estate
Woodside, California (Silicon Valley), USAsingle-family estate · $117 million · older holding (reported ~2012; date not stated in cited source)
source ↗Tokyo, Japanprimary residence (three-story home… · valued ~$85 million (valuation… · older holding (date not stated)
source ↗More
- Type
- primary residence (three-story home with indoor golf range)
- Price
- valued ~$85 million (valuation, not purchase price)
- Date
- older holding (date not stated)
Trophies
Fukuoka SoftBank Hawks (NPB baseball) - owned by SoftBank group since 2005; won 2025 Japan Series
source ↗Legal & regulatory
Arm v. Qualcomm/Nuvia (D. Del.): court granted Qualcomm JMOL Sept 30, 2025; Arm appealing to Third Circuit. Separate…
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- In full
- Arm v. Qualcomm/Nuvia (D. Del.): court granted Qualcomm JMOL Sept 30, 2025; Arm appealing to Third Circuit. Separate Qualcomm suit vs Arm (consolidated March 2026) expected to go to trial Q4 2026
SoftBank in 'Portsmouth Consortium' for 9.2 GW DOE Portsmouth Site (Piketon, Ohio) power/AI project under U.S.-Japan…
source ↗More
- In full
- SoftBank in 'Portsmouth Consortium' for 9.2 GW DOE Portsmouth Site (Piketon, Ohio) power/AI project under U.S.-Japan Strategic Trade and Investment Agreement
Stargate: $500B OpenAI/SoftBank/Oracle US AI infrastructure commitment announced at the White House (Jan 2025); five…
source ↗More
- In full
- Stargate: $500B OpenAI/SoftBank/Oracle US AI infrastructure commitment announced at the White House (Jan 2025); five new sites added Sept 2025
ABB Robotics acquisition subject to EU, China and US regulatory approvals
source ↗LINE MAN (Thailand) share acquisition by LY Corp delayed pending Thai regulatory approvals
source ↗Giving
Masason Foundation (孫正義育英財団) - Son is president
source ↗Renewable Energy Institute (自然エネルギー財団), founded by Son Aug 2011, chairman
source ↗Great East Japan Earthquake Reconstruction Support Foundation (2011); Son pledged ¥10B personally plus his SoftBank pay until retirement
source ↗Research gaps: Could not verify SoftBank's current stake in SoftBank Corp. or PayPay post-IPO; PayPay ticker not confirmed; DigitalBridge/ABB closing status not confirmed (web-search budget exhausted, relied on primary sources). Real estate facts are older and sourced only to Wikipedia. Son Asset Management holdings not public. Forbes article blocked (403). CIK 0001419737 (Son Masayoshi, 2007-08 13D filings) is an older duplicate reporting-owner CIK.
Prices via Finnhub · as of Sep 24, 2026 4:00 PM ET. For information only.
What to watch
Third $10B OpenAI tranche scheduled (may accelerate if OpenAI lists)Oct 1, 2026
source ↗SB Energy IPO (ticker SBE) on Nasdaq; S-1/A filed 2026-09-21Q4 2026 (not set)
source ↗SoftBank Group Q2 FY2026 earnings (last year's Q2 was Nov 11); date not yet posted~mid-November 2026
source ↗Qualcomm v. Arm trial expectedQ4 2026
source ↗DigitalBridge acquisition closing (DBRG filed Form 25 for preferred delisting 2026-09-22)late Sept/Oct 2026
source ↗ABB Robotics deal closing (guided mid-to-late 2026)H2 2026
source ↗