NASDAQ closes at record high as S&P 500 nears milestone

The Nasdaq Composite closed at roughly 27,121 on September 21, marking a fresh all-time high and eclipsing its previous record close of 27,093.90 set back on June 2. The S&P 500 wasn’t far behind, finishing near 7,760.29 and inching toward the highs it posted in August.

AMD joins the trillion-dollar club

Advanced Micro Devices stole the show, rallying nearly 10% in a single session and pushing its market capitalization past $1 trillion for the first time. Intel and Arm Holdings both surged more than 12% during the session. Meta Platforms added roughly 11% after analyst upgrades tied to its Muse AI assistant.

The macro backdrop helped

The 10-year Treasury yield slipped to approximately 4.976%. Lower yields reduce the discount rate applied to future earnings, which mechanically boosts the present value of growth stocks.

Brent crude oil prices also cooperated, dipping toward $100.58 per barrel. The decline was partly attributed to diplomatic progress involving the Middle East and a planned meeting between former President Donald Trump and Xi Jinping.

A pattern that keeps repeating

Throughout 2025 and into 2026, markets have followed a recognizable cycle: volatility driven by tariffs or geopolitical flare-ups, followed by sharp recoveries led by technology stocks riding AI enthusiasm.

AMD has steadily gained market share from Intel in data center processors while simultaneously positioning itself as a credible alternative to Nvidia in AI accelerators.