Stock market today: Why are S&P 500 futures falling despite strong bank earnings?

S&P 500 futures experienced a decline on Tuesday, as investors scrutinized quarterly earnings from prominent US banks and monitored losses in chip stocks. Dow futures, however, held a slight upward trajectory, while Nasdaq futures faced more substantial pressure. Following the opening bell at 6:54 am ET, S&P 500 E-mini futures dropped 10 points, or 0.13%, while Dow E-mini futures climbed 92 points, or 0.18%.

Nasdaq 100 E-mini futures, on the other hand, plummeted 182.25 points, or 0.59%, according to Reuters data. Notably, JPMorgan Chase reported a rise in third-quarter profits due to gains in investment banking and trading, yet its shares experienced a decline of 3.4% in premarket trading. Similarly, Wells Fargo's profit for the same period increased, bolstered by growth in its loan book and heightened interest income, yet its shares slipped by 1% in premarket trading.

Despite posting a profit slightly above analysts' expectations, Johnson & Johnson shares declined by 2.7% in premarket trading. Dow futures remained in the green after temporarily losing earlier gains, whereas UnitedHealth shares climbed by 2% after the health insurer raised its profit forecast for 2026, attributing the growth to tighter control over medical spending and improved profit margins in certain business units, as per Reuters.

The broader US stock market has been buoyed by expectations of robust corporate earnings. However, investors remain apprehensive about geopolitical tensions, rising government bond yields, and inflation. Analysts forecasted that S&P 500 companies would achieve a 30.6% increase in earnings during the July-September quarter, with technology and energy firms expected to record the highest gains.

Semiconductor stocks continued to falter following a sell-off on Monday, attributed to reports of technological advancements made by China's ChangXin Memory Technologies (CXMT), which could pose competition to South Korean chipmakers Samsung and SK Hynix. As South Korea's KOSPI index closed down 5.5%, the drop was primarily driven by pressure on technology stocks due to concerns over competition in the semiconductor industry.

Notable declines in semiconductor-related shares included Nvidia, AMD, Marvell Technology, Micron Technology, Western Digital, Seagate, and Sandisk. Oil prices slipped as traders considered the risk to supplies arising from attacks on Saudi Arabia and potential additional diesel shipments from Russia. Heightened energy costs fueled worries about global inflation, led to government bond yields reaching their highest levels in decades, and pressured central banks into maintaining tighter monetary policies.

Recent US economic data revealed that inflation increased less than anticipated, and job growth slowed, dampening bets on an imminent Federal Reserve interest rate hike. Traders widely anticipated the Fed to keep rates unchanged for the month, as per CME FedWatch data cited by Reuters. Investors are closely monitoring the September consumer price index (CPI), producer price index (PPI), and retail sales figures, which are due later in the week.

These reports may offer fresh insights into inflation, consumer spending, and the Federal Reserve's forthcoming interest rate decision. The performance of major companies and forthcoming US economic reports will likely determine the trajectory of the broader stock market in the upcoming sessions.