SoftBank Group issued $11.1 billion in dollar- and euro-denominated bonds this week, the largest high-yield corporate debt sale in history. The raise eclipses the previous record—$10 billion from Ineos in 2016—and signals Masayoshi Son's return to leverage as the primary tool for capital deployment. Shares jumped 7.2% in Tokyo on confirmation that proceeds will fund the company's OpenAI position, though the exact stake size remains undisclosed.
The bond sale splits into dollar and euro tranches, both priced at yields reflecting SoftBank's sub-investment-grade rating. The company carries a Ba3 rating from Moody's and BB from S&P, positioning it firmly in high-yield territory despite a market cap above $90 billion. SoftBank has not disclosed the maturity structure or coupon rates, but market participants expect tenors between five and ten years. The speed of execution—full books in under 48 hours—suggests institutional appetite for SoftBank paper remains intact despite the company's volatile track record. This is the third time in four years SoftBank has tapped bond markets to finance equity investments rather than organic growth.
The timing matters because SoftBank's balance sheet was already stretched. As of June 2024, the company held $24 billion in cash and equivalents against $67 billion in gross debt. Loan-to-value on its equity portfolio sat at 18%, near the 25% ceiling Son has publicly committed to. Adding $11.1 billion in new debt pushes net leverage higher at a moment when Vision Fund I continues to bleed unrealized losses and Vision Fund II has slowed deployment. The OpenAI stake is the hedge—if the company's rumored $100 billion valuation holds through the next funding round, SoftBank's position could justify the incremental borrowing cost. If not, the debt becomes structural weight in a portfolio already shadowed by Alibaba deleveraging and Arm's uneven trading since IPO.
Allocators should track two near-term catalysts. First, OpenAI's expected Q4 2024 fundraise, likely at a valuation between $100 billion and $120 billion, will clarify whether SoftBank increased or maintained its stake with these proceeds. Second, SoftBank's November 2024 earnings will disclose the exact deployment breakdown and update Vision Fund NAV, which has been negative year-over-year for six of the last eight quarters. Bond covenants, when disclosed, will reveal whether SoftBank retains flexibility for further issuance or if this raise caps near-term leverage.
The $11.1 billion is not expansion capital. It is substitution—debt replacing equity in the capital structure to preserve Son's control and avoid dilution. The market priced that clearly: equity up, credit spreads tight, no panic. The next move depends on whether OpenAI's valuation trajectory holds or breaks. SoftBank has until mid-2025 to prove the bet, when the first of these bonds will begin accruing material interest expense against a portfolio that has not posted a positive IRR since 2021.