US and China Agree on TikTok Deal - Rate Cut Almost Certainly Expected - Alphabet Surpasses $3 Trillion Market Capitalization - Tesla CEO Buys Own Shares Worth $1 Billion - OpenAI Introduces GPT-5-Codex as New Developer Standard - CoreWeave Becomes the Pace Setter in the AI Race

On Monday, September 15, 2025 , the US stock markets continued their upward trend, closing at new highs in the technology sector. The S&P 500 rose by 0.47% to reach a new record high of 6,615.28 points. The Nasdaq Composite saw an even more significant increase of 0.94%, climbing to 22,348.75 points, also a historical peak. In contrast, the Dow Jones moved only moderately upward, gaining 0.11% to 45,883.45 points. This further confirmed that market momentum is driven by technology- and AI-led stocks, while traditional index titles lag behind...