S&P 500 Most Active Stocks Week 39: Which Stocks Show Highest Volume on September 25

Intel led the most actively traded S&P 500 stocks on September 25, 2026: 61.13 million shares according to Chartmill's evaluation for Friday's session. The semiconductor manufacturer's stock closed at $123.00 and fell 3.45 percent. The S&P 500 closed that Friday up 0.51 percent at 7,743.41 points.

Nvidia and Super Micro Computer with High Volumes

Nvidia recorded the second-highest volume among S&P 500 stocks with 49.18 million traded shares. On September 25, 2026, the graphics card and AI chip manufacturer rose 0.22 percent to $225.07 and maintained its position as a market barometer with massive U.S. dollar trading volume.

Super Micro Computer achieved the third-highest volume with 35.55 million traded shares. The server manufacturer's stock rose 4.22 percent to $43.26 on September 25. Tesla followed with 34.16 million traded shares, but fell 1.54 percent to $372.11.

Microsoft and Nike Among Top Volume Stocks

Microsoft recorded trading volume of 25.29 million shares and rose 3.69 percent. On September 24, 2026, Hitachi Solutions – a Hitachi Group company and long-standing Microsoft partner, not a Microsoft subsidiary – received the Microsoft AI Business Solutions Inner Circle Award for 2026 to 2027; any connection with the stock price movement cannot be established.

Nike also achieved high volume with 26.34 million traded shares, but lost 0.22 percent. The sporting goods manufacturer remained under selling pressure.

Semiconductor Sector Drives Market Activity

The semiconductor sector represented four of the highest volume stocks on September 25, 2026. The picture was mixed: Micron Technology closed with a gain of 0.16 percent at $1,082.28, Advanced Micro Devices rose by approximately 0.2 percent to around $630.60, while Intel fell 3.45 percent. The gain was significantly stronger for Super Micro Computer at 4.22 percent.

Sustained investor interest in AI-related applications and computing infrastructure keeps trading activity in the sector high.

Market Environment and Weekly Development

The S&P 500 ended the trading week on September 25, 2026 with a weekly gain of around 1.2 percent. The technology-heavy Nasdaq indices performed significantly better. The Dow Jones Industrial Average rose 0.93 percent on Friday to 51,828.62 points – a gain of around 477 points with which it ended a three-week losing streak – and achieved a weekly gain of about 0.3 percent.

Market sentiment remained cautiously optimistic, supported by cooling inflation data that reinforced expectations of a stable interest rate environment for the final quarter of 2026.

Individual Weekly Developments

Meta fell 3.3 percent on Friday, September 25, 2026, but was up around 12.9 percent for the week. The weekly gain followed a series of hardware releases related to the AI agent Muse. Oracle lost about 1.8 percent on Friday and nearly 9 percent for the week.