The Invesco QQQ Trust (QQQ) closed at $522.29 on January 31, 2025, down 0.15% as the tech sector faced a mixed day amid geopolitical and economic uncertainties. The Nasdaq 100, which QQQ tracks, saw a decline of 0.14% to 21,478.05, reflecting investor caution. The market was rattled by the White House's announcement of new tariffs on Mexico, Canada, and China, which spurred a spike in the CBOE Volatility Index to 16.16, indicating heightened market anxiety. Nvidia's stock, a significant component of the Nasdaq 100, fell 3.7% following news of a meeting between its CEO and former President Trump, adding to the uncertainty. Meanwhile, the emergence of Chinese AI startup DeepSeek has raised concerns about the competitive landscape for U.S. tech giants, contributing to the sector's underperformance. Despite these challenges, the tech sector showed signs of a cautious rebound, buoyed by Apple's positive guidance, although the broader market sentiment remains fragile.