S&P 500 Gains and Losses Today: Robinhood and Western Digital Surge; Vistra Stock Slides

Group 1: Robinhood Performance - Robinhood shares surged over 12% to an all-time high, driven by CEO Vlad Tenev's announcement of surpassing 4 billion event contracts traded on its prediction markets [4][9] - Analysts from Piper Sandler cited the growth in prediction markets as a reason for raising their price target on Robinhood's stock [4] Group 2: Market Overview - Major U.S. equities indexes experienced modest gains, with the S&P 500 advancing 0.3%, the Dow increasing by 0.2%, and the Nasdaq rising by 0.5% [3] - The overall market sentiment was influenced by the potential implications of a government shutdown later in the week [3] Group 3: Other Notable Stock Movements - Shares of Western Digital rose by 9.2% following price target increases from Morgan Stanley and Rosenblatt Securities, attributed to growing demand for hard drives in support of artificial intelligence [5] - Coinbase Global's shares gained 6.8% as the price of Bitcoin and other major cryptocurrencies increased, with regulatory clarity around crypto being advocated by SEC Commissioner Hester Peirce [6] - AppLovin's shares jumped 6.3% to a record high after Morgan Stanley raised its price target, highlighting the upcoming launch of Axon Ads Manager [7] Group 4: Negative Stock Movements - Shares of Vistra fell by 4.5% after announcing a power supply agreement for its Comanche Peak nuclear facility, raising concerns due to a lack of information about the buyer [11] - Carnival's shares dropped 4% despite reporting strong bookings, as the company issued a lower-than-expected forecast for net yields [12] - Williams-Sonoma's shares sank 4.7% following President Trump's announcement of potential tariffs on imported furniture, negatively impacting businesses reliant on imports [10]