softbank became an asset class
The record junk bond sale is not the number to watch. The share of the market it represents is.
Last week in margin loan I noted reporting on a possible SoftBank overseas bond sale of as much as $20 billion. It priced on 23 September at $11.1 billion — the largest high-yield corporate bond sale on record anywhere, beating Numericable’s $10.9 billion from 2014.
Five tranches. The dollar notes went out at 8.625% for three and a half years, 9.25% for five and a half, 9.75% for seven and a half. Two euro tranches at 7.125% and 8%.
Hold those coupons next to SoftBank’s June 2021 issuance, which cleared between 2.125% and 5.25%. Same borrower, five years apart, roughly double the price of money. Some of that is the rate environment. Not all of it.
But the figure that actually stopped me is this one, carried in Reuters’ coverage: SoftBank has issued $14.6 billion of high-yield bonds in 2026, and that is 63.4% of the entire Asia Pacific and Japan high-yield corporate bond market.
One issuer is nearly two thirds of a regional asset class.
Think about what that does to anyone holding the index. A high-yield allocation is supposed to be a diversified claim on the credit of many mediocre borrowers, where idiosyncratic blowups average out. That is the entire premise of the product. In APAC high-yield, in 2026, it isn’t a diversified claim on anything. It’s a leveraged position in SoftBank, and SoftBank is itself a leveraged position in OpenAI — $64.6 billion in commitments, funded by bridge loans, asset sales, margin loans secured by the OpenAI stake, and now this.
The diversification didn’t fail. It was never there. A passive allocator who bought the region bought a directional AI bet and will find out about it in the drawdown.
Reuters also notes the strain: SoftBank’s expected cash from public listings of OpenAI and its data center subsidiary SB Energy got pushed out when both delayed IPO plans that could have launched this month. The bond market filled a hole the equity market declined to fill. At 9.75%.
I keep coming back to how ordinary the coverage was. “Record bond sale” reads as a triumph — biggest ever, books cleared, deal done. It is also a company paying nearly ten percent for seven-year money to buy stock in a company that just postponed its own IPO.
Records in the high-yield market are not achievements. They’re measurements of what something cost.
Sources: SoftBank raises $11.1 billion in world’s biggest high-yield corporate bond sale, Reuters via MarketScreener ↗ · SoftBank Raises $11.1 Billion in World’s Biggest High-Yield Corporate Bond Sale, Reuters via U.S. News ↗ · SoftBank raises US$11.1bil in record high-yield bond sale, The Star ↗