As of last week, the S&P 500—the most important single benchmark for the U.S. stock market—officially entered a correction. It fell 10% from its recent peak in February. This decline mirrors investor uncertainty among an erratic and inconsistent policy landscape from the Trump administration, especially on tariffs. The S&P 500 index, a broad measure of large-cap stock performance, is down roughly 5 percent on the year.

The S&P 500 has long been considered one of the best reflects of the overall U.S. economy’s health. Investors and financial analysts hang on its every move. Broadly speaking, its performance is beholden to things like corporate profits, interest rates and other economic indicators. And as the most traded of all indices, its every tick moves the needle on investment portfolios all over the world.

The recent market volatility further highlights the need for diversification across both asset classes and sectors within an investment portfolio. The bottom line The S&P 500 experienced a sharp correction immediate following the imposition of tariffs. It did bounce back in the interim, but it is still dangerously close to another major correction again.

This week roiling investor sentiment, the primary ingredient of turmoil, has been the uncertainty surrounding the Trump administration’s trade policies. At the same time, these policies stoke unpredictability in the opposite direction, making for greater market volatility and risk aversion.

All of this comes down to corporate profits. - Glassman

Market corrections, though alarming, are a necessary component of any thriving economic ecosystem. In fact, they can be triggered by a multitude of factors—economic slowdown, geopolitical turmoil, or simply a change in investor sentiment. As a measurement of market confidence, the S&P 500 is especially vulnerable to these ups and downs.

Unsurprisingly then, financial experts routinely recommend against panic selling when the market takes a dive. This kind of reactive approach can cement losses—and even worse—absorb the cost of risking future damage and recovery. A long-term investment strategy, along with a diverse asset allocation, is always advisable to ride the ups and downs of the market.

If you didn't sell, I'm not sure you lost it. If you sold, you guaranteed lost that $40,000. - Brad Klontz

The S&P 500's recent performance highlights the interconnectedness of global markets and the sensitivity of investor confidence to policy decisions. Understanding and tracking these trends is essential not just to ensure wise investments, but to strategically manage risk.