U.S. stock markets climbed on Monday, with major indexes approaching or reaching record levels, buoyed by announcements of two significant buyout deals and continued optimism around artificial intelligence (AI) technology. The Standard & Poor’s 500 index rose 0.7 percent, closing just 0.3 percent below its all-time high set earlier in the summer. The Dow Jones Industrial Average added 90 points, or 0.2 percent, while the Nasdaq composite advanced 1.1 percent, reaching a new record.

The most notable move came from PTC, a software company whose shares surged 33.5 percent after Schneider Electric, a French firm, announced plans to acquire it for roughly $22.6 billion in an all-cash deal valued at $205 per share. This acquisition announcement also lifted other software stocks, with Autodesk shares rising 4.5 percent. Another key transaction involved C.H. Robinson Worldwide’s decision to purchase RXO’s truck brokerage business, triggering a 22.5 percent jump in RXO’s stock. However, C.H. Robinson’s shares declined by 10.8 percent, marking the largest drop in the S&P 500 for the session.

Both Schneider Electric and C.H. Robinson highlighted the transformative potential of AI in their respective deals, contributing to broader gains across the AI sector. Notably, Nvidia, a prominent chipmaker powering AI developments, gained 2.1 percent, and Broadcom rose by a similar margin, serving as significant drivers behind the S&P 500’s advance.

Despite the upbeat market response, overall trading volume remained relatively subdued as investors awaited the start of the upcoming corporate earnings season. Analysts hold strong expectations, forecasting nearly 30 percent year-over-year profit growth for S&P 500 companies during the July through September quarter. If realized, this would mark the third consecutive quarter with earnings growth exceeding 25 percent, underlining underlying corporate strength amid economic uncertainties.

The energy market experienced price swings amid ongoing geopolitical tensions, especially related to the conflict involving Iran, which continues to cast uncertainty over global crude oil supplies. Brent crude settled at $100.32 per barrel, down 1.9 percent after fluctuating between $100 and $103 during the day.

In the bond market, the 10-year U.S. Treasury yield rose to 5.31 percent, approaching levels unseen since 2002, driven by concerns about persistently high oil prices and strong U.S. economic data. Higher yields imply increased borrowing costs, which can dampen economic growth and curb investor enthusiasm for equities.

A mixed economic report from the Institute for Supply Management indicated that activity in U.S. service industries, including real estate, transportation, and finance, expanded for the 27th consecutive month, though at a slightly slower pace than economists had anticipated. The report also showed accelerating cost pressures for businesses, suggesting potential ongoing inflation challenges.

Market observers widely expect the Federal Reserve to raise its key interest rate at least once more before the end of the year as part of efforts to contain inflation. The central bank implemented its first rate hike in three years last month amid sustained consumer spending and corporate investment, particularly in AI-related infrastructure.

Internationally, Japanese markets saw gains driven by technology stocks, while European markets experienced losses, notably France’s CAC 40 declining 0.8 percent amid concerns over national debt and budgetary pressures.