The investment-grade bond market is preparing for a busy September, but demand for corporate debt indicates that anxiety surrounding heavy supply may be overblown. According to Kelsey Berro, a portfolio manager at JPMorgan Asset Management, issuance expectations for the upcoming month sit in a wide range between $175 billion and $250 billion.
Credit portfolio managers have noted that even an issuance total hitting the upper end of $250 billion is manageable, though uncertainty regarding the final figure has complicated preparation across the market. The $75 billion gap between low and high forecasts has made it challenging for portfolio managers to position themselves ahead of September, which historically ranks as one of the busiest months of the year for issuance.
US blue-chip bond sales set a third straight monthly record in August, maintaining the market's fastest pace of issuance. This borrowing frenzy has been largely fueled by spending on the artificial intelligence buildout. August supply has already reached $157 billion with two weeks remaining in the month, bolstered by a $25 billion offering from Alphabet Inc., alongside large deals from AbbVie Inc. and Advanced Micro Devices Inc.
As the borrowing pace continues, investors are becoming increasingly selective about purchases and pricing. Some companies financing data center projects are turning to junk bond investors to help raise billions of dollars, even for debt that maintains investment-grade status.
Despite these supply concerns, retail demand has kept pace with record issuance throughout the year. High-grade flow data cited by Berro shows that retail demand for investment-grade bonds has already surpassed the full-year total for any year dating back to 2010. Berro pointed to this dynamic as a primary reason why September's heavy calendar will likely prove manageable.
Companies have borrowed more than $410 billion this year for data centers and other AI-related investments, according to data compiled by Bloomberg News. If September supply is absorbed without market disruption, Berro cautioned that sidelined investors could move quickly. She noted that any indication of market stability would likely draw buyers back in force, leading to a rush into the market.
"The massive capital expenditure required for artificial intelligence infrastructure is reshaping corporate borrowing patterns globally. While heavy bond issuance often causes market anxiety, the strong retail demand matching this supply indicates deep liquidity in the system. For businesses and investors watching the broader macroeconomic environment, this ability to absorb record debt issuance—ranging up to $250 billion in a single month—demonstrates resilient market confidence in AI-driven long-term growth, even as borrowing costs and structures evolve." — Dr. Shishir Gupta, Founder & CEO, StartupLanes
