Market Movements Driven by Trump’s Influence

There’s a lot influencing the stock market, right? Economic data, Federal Reserve decisions, and corporate trends all play a part. However, for the last 15 months, one person’s comments have really directed traders’ fortunes: President Donald Trump.

Since he took office last January, Trump’s statements during Oval Office meetings, press conferences, and his social media updates have notably impacted the S&P 500’s performance. According to a Fundstrat Research analysis, his grip on the market is something we haven’t seen since President Reagan in 1981, shaping the best and worst market days over twelve administrations.

“He’s really cornering the market,” said Hardika Singh, an economic strategist at Fundstrat. “It’s unusual for any president to have such direct control over stock market movements. We haven’t seen anything like this before.”

The Iran conflict has illustrated the extent of Trump’s influence on U.S. stocks, with the S&P 500 undergoing a swift V-shaped decline and recovery since 2020. It dropped 9% from its peak on January 27 to a correction point by March 30, only to climb back to its all-time high in just 11 trading days.

Examining daily trading sessions emphasizes how crucial the president’s words have become. For instance, on March 20, the S&P 500 saw a 1.5% drop after Trump commented that he wasn’t keen on a ceasefire with Iran. Then, on March 31, the index rose 2.9% — its best day since May — following Trump’s assurance about positive negotiations with Iran. There are several more instances like this, illustrating how sentiment swings day to day.

It’s not just stocks that are shifting. Commodity prices, especially oil, are fluctuating dramatically, reflecting a volatility not seen since the early days of the COVID-19 pandemic.

Trump’s unpredictable stance has made him both the “arsonist and firefighter” of the market, according to Alexander Altman from Barclays. It’s reminiscent of last year’s tumultuous tariff situation, where abrupt policy changes led to rapid market shifts, leaving Wall Street expecting daily reversals in policy and tone.

“Investors have been conditioned to brace for the worst, especially if it’s from the administration, but they’re also waiting for a tweet that reassures them,” noted Ross Mayfield, an investment strategist at Baird Private Wealth Management.

Presidential sway over the stock market isn’t exactly a new phenomenon. Typically, major market moves stem from both micro and macro dynamics, including government policies. The twist with Trump’s presidency is that market fluctuations are closely aligned with his social media activity and public remarks.

“I’ve never seen the market react so strongly to daily chatter from the White House,” said Ed Yardeni, a seasoned market strategist. “Trump’s daily comments seem poised to impact the market significantly.”

Before his second term, Trump’s focus on stock prices as a barometer was already known. The White House’s social media has even responded to market shifts, displaying graphics on the S&P 500’s performance and urging Wall Street not to panic during turbulent times. He has openly encouraged investors to buy stocks.

“Looking back at the data, this is unprecedented,” Singh remarked. “It’s really remarkable.”

The highest S&P 500 gains during Trump’s second term have included a 9.5% rise on April 9, 2025, when he paused tariffs, and a 3.3% increase on May 12, 2025, after a trade ceasefire between the U.S. and China. Conversely, the worst days involved a 6% drop on April 4, 2025, following retaliatory tariffs from China, and a 4.8% dip on April 3, 2025, after the first major levy introduction.

Some Wall Street analysts argue that this deep connection between presidential dialogue and market reactions is purely coincidental and relates to the frequency of communications from Trump.

Barclays’ Altman pointed out that volatility indices suggest markets aren’t necessarily more unsettled under Trump compared to earlier administrations. His analysis shows the CBOE Volatility Index has averaged 19.3 across all presidential terms since 1990, matching the averages during both Trump’s and President Biden’s tenure.

“Although many may seem to tie Trump’s unusual communication style to market volatility, the truth is that markets are responding consistently to historical patterns,” Altman explained. “It’s more about the news flow than anything else.”

Michael Green from Simplify Asset Management noted that the rise of passive investing has heightened market sensitivity to news, including presidential statements or unexpected earnings releases. He believes the market is now four to five times more reactive than it was historically.

“Trump’s volatility in the headlines simply results from more frequent speaking engagements,” he added. “This is just the era we’re in.”