FUNDING

SoftBank Cuts OpenAI-Backed Margin Loan from $10B to $6B as Lenders Balk at Private Valuations

S Sarah Chen May 9, 2026 3 min read
Engine Score 8/10 — Important

SoftBank slashes OpenAI-backed loan $10B to $6B as lenders balk

Editorial illustration for: SoftBank Cuts OpenAI-Backed Margin Loan from $10B to $6B as Lenders Balk at Private Valuations
  • The Decoder reported on May 9, 2026 that SoftBank scaled back its planned OpenAI-shares-backed margin loan from $10 billion to up to $6 billion.
  • Lenders pulled back because they couldn’t reliably price OpenAI as a private company; the final number could shift further as talks continue.
  • The deal is structured as a margin loan: SoftBank pledges OpenAI shares as collateral. Two-year tenor with an option for a third year.
  • SoftBank also took a $40 billion bridge loan in March 2026 to fund additional OpenAI investments and general corporate expenses; the two companies remain partners in the Stargate AI infrastructure project.

What Happened

SoftBank scaled back a planned margin loan backed by its OpenAI shares from $10 billion to up to $6 billion, sources told Bloomberg News, summarized by The Decoder on May 9, 2026. Some lenders got cold feet because they couldn’t comfortably put a reliable price tag on a private company like OpenAI. The final number could still shift as talks continue. Neither SoftBank nor OpenAI responded to requests for comment, Reuters separately reports.

Why It Matters

The downsized loan is a concrete data point on how the credit markets are pricing AI valuation risk. SoftBank’s $10 billion ask was structured as a margin loan — collateralized by OpenAI shares — which means lenders had to underwrite OpenAI’s private valuation independently. The $4 billion reduction signals that lenders are not yet comfortable underwriting a single private AI company at the implied collateral coverage ratios required for a $10 billion facility. The pullback fits inside a broader 2026 narrative where AI capex commitments at hyperscalers (Anthropic-Google $200B, Anthropic-SpaceX Colossus-1, $725B combined Big Tech AI capex) face an emerging financing strain on the lender side.

Technical Details

The deal structure: SoftBank would put up its OpenAI stake as collateral to borrow against. The loan has a two-year tenor with an option to extend for a third. Margin loans of this scale require lenders to be confident in:

  • The current valuation of the underlying collateral (OpenAI shares)
  • The volatility profile of that valuation over the loan tenor
  • The liquidity available to SoftBank if margin calls occur
  • Recovery scenarios in default

The reported reason for lender hesitation — inability to reliably price OpenAI — is structurally novel: most of OpenAI’s recent valuation marks come from primary financing rounds (the $852 billion mark from late 2025), tender offers among employees, and limited secondary trades. None of those provide the public-market liquidity reference lenders typically use to mark margin loan collateral. OpenAI is rumored to be eyeing an IPO later this year, which would resolve much of the pricing uncertainty — but the timing leaves the current loan facility exposed.

The broader SoftBank-OpenAI relationship: SoftBank first invested in OpenAI in September 2024 and took out a separate $40 billion bridge loan in March 2026 to fund additional OpenAI investments and cover general corporate expenses. The two companies are also partners in Stargate, the massive U.S. AI infrastructure project. SoftBank’s ongoing capital needs around AI investments are the operational driver for the additional facility.

Who’s Affected

SoftBank Group’s near-term capital availability for additional AI investments is reduced by $4 billion, potentially constraining new investment commitments in the second half of 2026. OpenAI’s reported IPO timeline gains additional urgency: a public listing would resolve the private-valuation pricing problem that drove the lender pullback. The broader pre-IPO AI lab cohort — Anthropic ($900B reported funding round), xAI, Cohere, Mistral — gains a cautionary signal that very large facilities collateralized by private AI shares face lender skepticism. Banks involved in the loan syndication (not yet publicly named) face their own internal pricing-committee questions on AI lending.

What’s Next

SoftBank may close the $6 billion at the lower end or attempt to add additional lenders to bring the total back toward $10 billion. The OpenAI IPO timeline — reportedly targeting late 2026 — would resolve much of the pricing uncertainty if it proceeds. Watch for parallel reporting on Anthropic’s debt-side capital structure as it completes its $50 billion equity round; Anthropic’s CFO Krishna Rao deliberately delayed the round until cloud capacity deals were in place, suggesting the company is more focused on equity than debt for current capital needs. The Cerebras IPO (price range being raised, covered separately today) may also influence near-term private-AI debt-market sentiment if the offering prices strongly.

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