The Nasdaq Composite rose 3.07% to 26,683.64 on Monday, its strongest single-session percentage advance since March 31, as the preliminary US-Iran ceasefire triggered broad-based technology buying, with more than 80% of Nasdaq-listed stocks closing higher and the technology sector within the S&P 500 advancing 3.4%.

  • The Nasdaq Composite rose 3.07% to 26,683.64 Monday, its best single-day percentage gain since March 31.
  • More than 80% of Nasdaq-listed stocks closed higher, indicating broad participation rather than a narrow mega-cap-driven advance.
  • The technology sector within the S&P 500 rose 3.4%, the strongest gain of any major sector during the session.
  • SpaceX (NASDAQ: SPCX) rose 5% pre-market Monday, building on Friday's 19% IPO debut, contributing to technology sector momentum.

Technology stocks' outsized response to the Iran ceasefire reflects the sector's particular sensitivity to interest rate expectations. Lower inflation from cheaper energy reduces pressure on the Federal Reserve to maintain a restrictive monetary stance, mechanically supporting the valuation multiples that growth-oriented technology companies carry.

Bond markets moved quickly to price a modestly lower terminal rate expectation following the peace announcement, providing a direct tailwind for technology valuations through the discount rate channel. The interaction between geopolitical resolution, energy prices, and monetary policy expectations compressed into a single trading session Monday.

The breadth of the advance distinguishes it from the narrow, concentrated technology rallies of recent months. When more than 80% of listed stocks close higher, the signal reflects a genuine macro regime shift in investor sentiment rather than rotation within the technology sector.