Good morning. This is TheStreet's Stock Market Today for Aug. 20, 2025. The stock market is now open. At last look, the indexes are near session lows. The Dow (-0.26%), which started the day in the green, is now down. It joins the Russell 2000 (-0.83%), S&P 500 (-0.88%), and Nasdaq (-1.64%).

The weighting of Mag 7 stocks in the S&P 500 just soared past 34%. Find out why that matters from a historical perspective, and how to navigate it using Barchart tools.

The S&P 500 trades at an expensive valuation that has historically preceded negative returns over the next one, two, and three years.

There is a lot of noise right now, Essaye writes, with conflicting economic and inflation data, concerns about data validity, and geopolitics, among other concerns. Investors need to stay focused on whether the news makes stagflation more likely or would damp enthusiasm for AI.

The Shanghai Composite, an index of Chinese stocks trading in the country's financial capital, tallied its highest closing level since August 2015 on Monday, the latest milestone in what is shaping up to be a strong year for China's equity market.

The benchmark Nifty 50 Index ended just short of the psychological hurdle of the 25,000 mark. The experts say that one may expect Nifty to move up further in the short term and could reach the upside target of 25300 in the near term.

The Invesco QQQ Trust ETF (QQQ) mirrors the Nasdaq-100, an index that tracks the largest 100 non-financial companies on the Nasdaq stock exchange. This index is essentially a subset of the larger Nasdaq Composite, so it's fairly tech-heavy.

Stocks may be struggling in the U.S. on Wednesday, but the same can't be said for what's going on in the U.K. The FTSE 100, the U.K.'s premier stock-market index, rose 98.92 points, or almost 1.1%, to close at 9,