Here are 5 key events that drove the stock market last week

Core Viewpoint - The stock market experienced a positive week, driven by volatility in the artificial intelligence sector, with the S&P 500 gaining 0.1% and the Nasdaq rising 0.5% despite concerns over AI funding and spending levels [1] Group 1: Market Performance - The S&P 500 and Nasdaq recorded modest gains for the week, although they remain lower for the seasonally strong month of December [1] - Micron Technology's shares surged 7% following strong earnings, contributing to the market rebound [1] - Oracle's shares rose over 6.5% after TikTok agreed to sell its U.S. operations to a joint venture involving Oracle and Silver Lake [1] Group 2: Company Highlights - Nvidia's shares increased by 3.4% for the week, with the U.S. government reviewing shipments of its H200 chips to China, leading to a valuation of 23.5 times fiscal 2027 earnings estimates [1] - Nike reported better-than-expected fiscal 2026 Q2 earnings but saw a 10.5% drop in stock price due to disappointing sales in China and a weak fiscal Q3 outlook, resulting in a total weekly loss of 13% [1] - Capital One's stock closed at a record high, with a 20% increase since November 20, prompting the company to raise its price target to $270 while downgrading its rating to hold-equivalent 2 [1] - Texas Roadhouse was added to the portfolio, showing consistent performance in comparable sales despite consumer weakness [1] - Costco's position was trimmed due to mixed quarterly results and declining renewal rates, with concerns about potential impacts on earnings growth [1]