Key Highlights

  • US investment-grade bond issuance reached a record USD 1.76 trillion in 2026, passing the USD 1.75 trillion set in 2020, according to published market data, with AI infrastructure financing cited as the driver.
  • SpaceX (NASDAQ:SPCX) said it closed USD 40 billion of financing to buy AI chips, one of the largest debt raises tied to the AI build-out, though reports differ on its exact structure.
  • A Blackstone (NYSE:BX) data-centre unit, QTS, is reported to be seeking USD 800 million, which shows that smaller infrastructure borrowers are also tapping credit markets.
  • iShares iBoxx USD Investment Grade Corporate Bond ETF (NYSEARCA:LQD) holds a basket of investment-grade corporate bonds, so heavy supply matters to its yield and price, with the 10-year Treasury yield near 4.99% going into the Fed decision.

What the Record Shows

US companies with high credit ratings have sold USD 1.76 trillion of bonds in 2026, edging past the USD 1.75 trillion issued in the whole of 2020. The gap is about USD 10 billion, simple arithmetic on two published numbers, and the 2026 total can still rise because the year is not over. The figure comes from one published market data report and has not been matched against issuance statistics from the industry body that tracks the market. The explanation offered is that AI infrastructure is being financed with debt, from chips to data centres. Two examples were cited on October 26, 2026: the SpaceX financing and the Blackstone QTS borrowing.

How Heavy Supply Reaches a Bond Fund

When issuers sell large volumes at once, buyers must absorb the new supply. If demand is slower than supply, issuers tend to pay higher yields and the extra yield over Treasuries, known as the spread, can widen. Higher yields mean lower prices on bonds already in circulation. iShares iBoxx USD Investment Grade Corporate Bond ETF (NYSEARCA:LQD) holds a broad basket of investment-grade corporate debt, so its price reflects both Treasury yields and spreads. A record year does not by itself mean spreads are widening, and no spread data were captured here. What it does show is that borrowers see ready demand, since an order book that was too thin would have forced issuers to wait.

Risks and What to Watch Next

The backdrop is a 10-year Treasury yield near 4.99% and a 30-year yield near 5.30%, levels that raise the cost of new borrowing. A USD 69 billion two-year note auction cleared at 4.708% with a record share of direct bids, and a 5-year auction follows at 1:00 p.m. ET on October 27. The Federal Reserve decides on October 28. Another risk is concentration: if AI revenue lags the debt taken on, creditors carry the strain. Reports describe the SpaceX deal both as corporate bonds and as equipment financing, so the structure should be treated as unconfirmed. Watch also whether spreads over Treasuries move after the Fed, because that shows what buyers demand.

Where Things Stand

The answer is that iShares iBoxx USD Investment Grade Corporate Bond ETF (NYSEARCA:LQD) is in focus because record supply shows how much of the AI build-out is being funded with debt. The USD 1.76 trillion total, the SpaceX financing and the QTS borrowing all point the same way, but they do not prove stress. The next catalysts are the 5-year auction on October 27 and the Fed decision on October 28. The figure comes from one report. This is not investment advice.