Donald Trump's Tariff Policy Has Repeatedly Triggered Multi-Trillion-Dollar Stock Swings Since Early 2025. Here's Why Markets Still Struggle to Price In His Next Move.

President Donald Trump's tariff policy has had a significant impact on the stock market since early 2025, according to recent reports. The first major evidence of this came on April 3, 2025, when the S&P 500 experienced a sharp decline of 4.8% following a series of new tariffs announced by the president. This marked the beginning of a period of increased market volatility, as investors struggled to anticipate the president's next move.

Despite some short-term fluctuations, the market largely recovered from the initial shock, with the S&P 500 regaining much of its lost value within just six trading days. However, this recovery was not without its consequences. Many investors found themselves caught in a cycle of selling and buying stocks in response to Trump's tariff announcements, leading to a heightened sense of uncertainty and whiplash-like movement in the market.

The volatility of individual stocks compared to the overall market has reached unprecedented levels. In early July 2026, the gap between the average volatility of single stocks and the volatility of the index reached an all-time high of 31%, according to data from CBOE Global Markets. This disparity highlights the difficulty investors face in accurately predicting the president's next tariff move and its potential impact on specific companies.

The situation has left many investors questioning whether they made the right decisions in the short term, as they grapple with the long-term implications of Trump's tariff policies. The situation remains volatile, with the market still struggling to find a clear sense of direction in the face of the president's unpredictable actions.