2025 came to a close with global markets swinging between political shocks and technological breakthroughs.Trump’s return reignited policy uncertainty, AI competition reshaped capital allocation, gold rewrote history, and megacaps expanded the limits of imagination.Markets trembled under tariff threats — yet celebrated amid an unprecedented computing boom.Let’s look back at the Top 10 Investment Topics of 2025.1. Trump Returns: Global Tariff Turmoil & “TACO Trades”Trump officially returned to the White House, pushing markets into a new phase of policy-driven repricing, with tariffs, fiscal stimulus, and geopolitical uncertainty back.2. SPX Hits Record Highs for 39th Time $S&P 500(.SPX)$ is on pace for a solid year of record closing highs.