Wall Street posts first positive week since October despite Nvidia-driven volatility

Wall Street posted its first positive week since October despite turbulence driven by Nvidia, whose CEO resigned amid a national security scandal involving a relationship with a Chinese tech executive. The S&P 500 fell 30.73 points to 7,561.67, while the Nasdaq dropped 229.82 points to 25,136.27, and the Dow rose 50.46 points to 52,347.55. Nvidia's market value lost nearly $600 billion this week, with CFO Colette Kress named interim CEO. More than 60% of S&P 500 stocks rose Friday, led by health and financial sectors, though AI-focused tech shares fell. Oil prices fluctuated after President Trump said the U.S. didn't need an Iran deal, with Brent crude closing at $95.84 per barrel.