High-Grade Monthly: Summer sprint continues post-Labor Day as rates soar

High-grade bond issuances surged during a summer week following Labor Day, with a record-breaking $57 billion invested across 30 offerings on Tuesday and Wednesday alone. This marks the fourth consecutive month of monthly records set in June ($184 billion), July ($137 billion), and August ($151 billion), according to LCD. The upcoming September month is expected to see supply exceeding $200 billion, surpassing last year's unprecedented $189 billion output.

Notably, Oracle's $18 billion issuance in August stands out as a significant event following the ongoing AI debt barrage, with the company pricing 5.95% notes due in 2055. However, recent investor behavior has changed, as Oracle's notes yielded 7.875% on September 10, with spreads nearly doubling compared to the previous T+125 pricing level.

The AI debt landscape remains distinct, with the latest T+78 spread for Morningstar's IG index up by one basis point compared to the year's lows. While the latest September start has yet to witness a blockbuster placement, average deal size this week was $1.9 billion, slightly lower than the record-setting average seen through August.

Notable deals included GlaxoSmithKline's $6.5 billion offering for its Nuvalent acquisition and a $6 billion print for UBS. The summer M&A frenzy has resumed, with AbbVie and Martin Marietta Materials securing $10 billion and $5.5 billion respectively, accounting for 20% of last month's $31 billion in M&A funding, the highest since May.

However, a significant portion of new-money borrowing needs remains unmet, leaving opportunities for diverse spending requirements in M&A, AI infrastructure, and other large-scale ventures.