SoftBank launched $10 billion plus €1 billion of senior unsecured notes to fund the third, $10 billion tranche of its OpenAI investment, due to close October 1, and cancel a bridge facility. The dollar deal spans 3½, 5½ and 7½ years; Fitch rated it BB+. Investor guidance placed the three dollar tranches roughly between 8.75% and 9.875%, a notably high carry for capital whose payoff remains tied to a private company’s eventual cash generation or liquidity event. Reuters reported the structure and use of proceeds; a Thursday filing showed the deal raised about $11.1 billion across dollars and euros.
The economic transmission is unusually clean. Public high-yield buyers are replacing short-term bridge lenders and assuming duration while SoftBank converts cash into illiquid OpenAI equity. SoftBank gains time and avoids an October funding squeeze, but a 9%-plus coupon means OpenAI’s value has to compound quickly enough to cover a very visible financing drag. This is also a distribution event: the AI capital cycle is no longer confined to private funds, hyperscaler capex and chip equities. It now occupies a meaningful slice of the speculative-grade market.