SoftBank Group
Masayoshi Son's AI mega-bet: Arm owner, OpenAI backer, Stargate co-lead
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Full file coming soon. SoftBank Group's links, deals and figures below are what the graph holds today.Not collected yet: 360, Money, Investors, Market share, People and hiring, Legal, Earnings calls. Anthropic is the first complete company file (people, investors, legal, hiring, birth to now); other companies follow one at a time. Open Anthropic's file
Overview1 unit in the group
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L6 Power · Investor / capital · SFTBY · Japan
SoftBank Group
Masayoshi Son's AI mega-bet: Arm owner, OpenAI backer, Stargate co-lead
- Links
- 5
- Deals from filings
- 0
- Exposed if it fails
- 0
- 0 within 2 steps
- It depends on
- 0
- 0 within 2 steps
No company file yet: revenue, customers and other figures appear here once they are taken from its filings.
The group
1 unit · where each sits in the stack| Unit | Layer | Type | Links | Deals |
|---|---|---|---|---|
| L2 Chips | Accelerator | 4 | · |
What it is
SoftBank owns ~90% of Arm and became a lead financier of the AI buildout in 2025, anchoring the $500B Stargate datacenter program with OpenAI and Oracle and committing tens of billions directly to OpenAI (leading a round that valued OpenAI at ~$500B). It also acquired chip/design assets (Ampere Computing, Graphcore earlier) and reportedly explored large equity in OpenAI plus an Nvidia stake. SoftBank's strategy is a leveraged, concentrated wager that AGI-scale compute demand will compound Arm's and its portfolio's value.
Key facts
from its map entry- Arm ownership
- ~90%
- Stargate
- $500B program co-lead
- OpenAI
- led round at ~$500B valuation
Pick a link to move the graph there: · · · ·
Connections5 links
Pulled 28 Oct 2026 · AI Systems Map links
Backs
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News and events1 item
- 31 Mar 2026SoftBank GroupOpenAI closes $122B round at $852B post-moneyfiling
Wider news feed: not collected yet
Today this lists events taken from filings and this site's own AI updates. A news feed with entity linking (who did what, on which date, from which source) is next, so every move lands on the right company.
Data sources2 sources
| Source | Feeds | Data dated | Pulled | Pulled again | Status |
|---|---|---|---|---|---|
| Market quote (Yahoo Finance, unofficial) | 360 | 30 Oct 2026 | 30 Oct 2026, 12:46 EDT | daily | fresh |
| AI Systems Map links5 links; built July 2026, deals re-checked against filings 27 to 28 Oct 2026 | Connections | · | 28 Oct 2026 | when the map is reviewed | hand-built; deals checked against filings |
Times are New York time. Free sources are pulled on the schedule shown by the pipeline runner (data/corpus/run_pipelines.py), which logs every run; paid sources run only with the owner's yes; filings and newsroom pages are re-read when a new document is filed.
Links come from the AI Systems Map ontology. Deals carry the filing's own wording and a quote, checked against the document; latest source 2026-10-26. Not investment advice.