Stocks opened the week on a cautious footing Monday, with the S&P 500 down 0.4 percent and the Nasdaq Composite off 0.7 percent by 11:15 a.m. Eastern, while the Dow Jones Industrial Average clung to a 0.1 percent gain. The session began with the Dow shedding 15.1 points to 53,261.95, the S&P 500 losing 11 points to 7,663.38, and the Nasdaq sliding 115.1 points to 26,065.32. Traders weighed a threatened sanctions offensive against Iran against a calendar crowded with Nvidia results and a key inflation print later in the week.
Sanctions rhetoric sharpens
The Trump administration warned it could target nations and companies that keep trading with Iran, labeling the potential measures the "greatest financial offensive ever." Treasury Secretary Scott Bessent coined the phrase "economic D-Day" in a Financial Times opinion piece and was slated to hold a press conference later Monday. The language escalated a standoff that had already pushed Treasury yields to multi-year highs last week on concerns over energy costs and rising federal debt.
Treasury toolkit in focus
CNBC reported Bessent may tap the Treasury's nearly $1 trillion General Account to fund bond buybacks rather than lean on short-term bill issuance. The shift would mark a meaningful change in how the department manages liquidity at a time when debt-service costs are climbing. Briefing.com analyst Patrick O'Hare noted that late August is usually quiet, but "this week is setting up to be quite busy."
Chip sector leads declines
Nvidia fell 2.44 percent ahead of its closely watched earnings report, dragging on the broader semiconductor complex. Marvell Technology and Micron Technology each dropped more than 6 percent. Apple and Amazon edged higher by less than 1 percent apiece, offering scant offset. Alibaba's U.S.-listed shares slipped 1.24 percent after the company launched a $10.2 billion share sale to fund artificial intelligence investments, while PDD Holdings rose 0.44 percent following an 8 percent increase in second-quarter revenue.
Commodities diverge
Oil gave back recent gains as investors took profits ahead of sanctions details. Brent crude futures fell $1.01, or 1.1 percent, to $93.38 a barrel at 1316 GMT, while West Texas Intermediate dropped $1.42, or 1.6 percent, to $85.64. Gold moved the other way, climbing 1.6 percent to $4,677.14 an ounce by 1334 GMT on the buyback talk and a softer dollar. December gold futures added 1.2 percent to $4,734.70. Silver rose 0.8 percent to $69.52, platinum gained 0.7 percent to $1,891.43, and palladium advanced 0.7 percent to $1,359.41.