Top Stocks today: Nvidia, Robinhood and Pfizer lead the market

Market Overview - Stocks initially fell due to concerns over a potential government shutdown but recovered significantly by the market close [1] - The S&P 500 gained 0.4%, the Nasdaq Composite rose 0.3%, and the Dow Jones Industrial Average closed 0.2% higher [7] Company Performances - CoreWeave, backed by Nvidia, saw a stock increase of 11.7% after securing a $14.2 billion long-term cloud deal with Meta [2][11] - Nvidia's stock rose 2.6%, reaching a 52-week high of $187.35, and it has joined the $4.5 trillion market cap club [10][11] - Pfizer's stock increased by 6.8%, indicating a strong performance in the healthcare sector [2][7] - Robinhood gained 4.7% following its recent entry into the S&P 500 [2] Sector Insights - The healthcare sector showed general gains, with multiple pharmaceutical companies performing well [2][7] - Nvidia's upcoming GPU Technology Conference is expected to be a positive catalyst for its stock, boosting analyst confidence [12]