Nvidia's stock is likely to face downward pressure due to the DOJ's antitrust investigation, which raises concerns about potential legal challenges. Additionally, the significant market cap decline following the earnings report, despite beating estimates, indicates investor skepticism about future growth. These factors combined suggest a negative short-term impact on Nvidia's stock price.

While Broadcom is not directly impacted by the DOJ investigation into Nvidia, its upcoming earnings report is part of the broader tech and semiconductor market dynamics. Political risks and market trends, such as the significant investment in tech ETFs, may influence its stock performance. However, the direct impact on Broadcom is less certain, leading to a neutral short-term outlook.