Overview
SoftBank Group announced on 2 October 2026 that it has completed a $30 billion investment in OpenAI, fulfilling its commitment in the AI start‑up’s most recent fundraising round. The investment was part of a broader capital raise that saw OpenAI secure $122 billion in commitments, valuing the company at $852 billion, with Amazon, Nvidia and SoftBank acting as anchor investors.
Funding Structure
SoftBank had previously agreed to provide the capital in three equal tranches of $10 billion each through its Vision Fund 2. To finance the $30 billion outlay, SoftBank raised $11.1 billion in the previous month via the world’s largest high‑yield corporate bond sale, a move described as the biggest such issuance globally. Concurrently, the conglomerate cancelled the remaining $10 billion of undrawn capacity under a $40 billion bridge loan that it had secured earlier in the year.
Ownership Position
With the $30 billion injection, SoftBank’s cumulative investment in OpenAI now stands at $64.6 billion, translating to a 13% equity stake in the AI laboratory. This positions SoftBank as one of the largest shareholders and underscores its strategic push, led by founder Masayoshi Son, to become a dominant investor in artificial‑intelligence technologies.
Additional Context
The article notes that the investment aligns with SoftBank’s broader strategy of backing transformative technologies and that the bond issuance reflects strong investor appetite for high‑yield corporate debt linked to AI‑related growth.