Investors Celebrate 2025 Stock Market Performance
Let’s be honest. For most investors, the U.S. stock market created its share of angst and anxiety in the first few months of 2025. After reaching all-time highs in February, the stock market quickly headed south. In a period of less than two months, the benchmark S&P 500 fell by 18.9% while the tech-heavy NASDAQ plummeted by nearly 24%. Like I said, it wasn’t a good start to the year.
The sudden pullback in the stock market was fueled by President Trump’s tariff and trade disputes, many with some of our largest trading partners including China, Canada, Mexico and the European Union. Many on Wall Street quickly assumed these disputes would cause a sharp decline in consumer and business spending, send inflation soaring and send the economy into recession.
By mid-April, however, Wall Street started to realize the economy was absorbing the tariffs and trade disputes much better than originally expected. Inflation didn’t surge higher, consumer and business spending remained fairly robust while the economy started to reignite with solid growth. In response, investors began driving the stock market to new record highs.
The S&P 500 is the bellwether index for the U.S. stock market. It’s comprised of the stocks of the 500 largest U.S. corporations. All 500 stocks are categorized into one of 11 economic sectors based on their primary business activity. For the full year 2025, the S&P 500 gained a hefty 16.4%. The NASDAQ, meanwhile, surged 20.4% while the Dow Jones Industrial Average increased 13%.
All 11 sectors within the S&P 500 posted a gain in 2025. However, not all sectors shared the same level of success. Likewise, there was also tremendous disparity among individual stocks. According to S&P Global, just 60.8% (304) of the 500 companies within the S&P 500 posted a gain in their stock price. The remaining 196 companies saw their stock prices fall last year.
The S&P 500’s annual gain of 16.4% was heavily concentrated within a handful of large companies within two main sectors – the Information Technology sector and the Communications Services sector. In 2025, the stocks in these two sectors accounted for nearly two-thirds (63.1%) of the S&P 500’s entire annual gain. This reflects the ongoing boom in artificial intelligence (AI) fueled by the demand for advanced microchips, AI software and data infrastructure.
Information Technology companies like NVIDIA, Broadcom and Microsoft and Communications Services companies like Alphabet (Google) have been key players in the development and use of AI technology. Last year, they were also the main driver of the broader U.S. stock market. In 2025, these four companies accounted for 43.6% of the S&P 500’s annual gain. That means the other 496 stocks that make up the S&P 500 accounted for the remaining 53.4% of the gain.
2025 marked the third consecutive year of stellar gains in the S&P 500. The S&P 500 gained 23.3% in 2024 and 24.2% in 2023. Investors would like to make it four in a row.
Mark M. Grywacheski, Investment Advisor
Quad Cities Investment Group is a Registered Investment Adviser.
This material is solely for informational purposes. Advisory services are only offered to clients or prospective clients where Quad Cities Investment Group and its representatives are properly licensed or exempt from licensure. Past performance is no guarantee of future returns. Investing involves risk and possible loss of principal capital. No advice may be rendered by Quad Cities Investment Group unless a client service agreement is in place.