NEW YORK — The S&P 500 gained 1 percent Monday, closing at 7,737, as optimism surrounding a potential U.S.-Iran diplomatic agreement drained geopolitical risk premiums from equity and commodity markets alike. The Dow Jones Industrial Average advanced 1.7 percent to 54,086. The Nasdaq Composite rose 2.6 percent to 26,585. The Russell 2000 gained 1.8 percent to 3,037.
President Trump called off planned military strikes against Iran, and hopes for an interim deal pulled crude prices lower. Peter Cardillo, chief market economist at Spartan Capital Securities, said the cancellation of strikes and the prospect of diplomacy "set the ball rolling this morning."
Oil's decline carries direct implications for the rates market. Falling crude reduces long-term inflation expectations, compressing the inflation premium embedded in longer-duration Treasuries and lowering the perceived duration risk for bondholders. If that repricing holds, the Fed's policy path becomes less restrictive at the margin—a dynamic worth watching heading into the next FOMC window.
The dollar weakened against major currencies. The Japanese yen strengthened to a 10-week high against the dollar, a move consistent with unwinding of risk-on carry positions as geopolitical uncertainty receded.
With the macro backdrop clearing, money rotated back into the AI trade. NVIDIA rose 2.6 percent to 211.94. Apple gained 2.0 percent to 309.38. Microsoft increased 1.1 percent to 492.81. Tesla advanced 1.6 percent to 327.35. Alphabet climbed 1.1 percent to 377.65.
In credit, spread compression is the logical next step if geopolitical risk premiums continue to dissipate. Reduced uncertainty supports tighter pricing across corporate and sovereign debt, with the clearest benefit accruing to higher-quality issuers.


