Core Viewpoint - The upcoming earnings season is expected to significantly influence the S&P 500, Nasdaq 100, and Dow Jones indices, providing insights into the effects of Donald Trump's tariffs on corporate America [1] Group 1 - The earnings reports will serve as a key catalyst for major stock indices [1] - Investors should closely monitor the impact of tariffs on corporate performance during this earnings season [1] - The article outlines important factors to watch in the upcoming earnings announcements [1]