Market Sentiment - The CNN Money Fear and Greed index improved to a reading of 52.1, remaining in the "Neutral" zone, up from 47.9 [7] - U.S. stocks closed higher, with the Dow Jones index gaining approximately 1%, reaching record highs as investors shifted towards cyclical and blue-chip stocks [1] Sector Performance - Memory chip stocks, including Sandisk Corp., Western Digital Corp., and Seagate Technology Holdings, experienced significant gains due to expectations of rising memory prices amid a global supply crunch [2] - Most sectors on the S&P 500 ended positively, with materials, health care, and industrials showing the largest gains, while energy and communication services sectors closed lower [5] Company-Specific Developments - Tesla Inc. saw a decline of over 4%, marking its tenth drop in 11 sessions, influenced by competitive pressures in the robotaxi market and market share losses in Europe to BYD [3] - Investors are anticipating earnings results from Albertsons Companies Inc., UniFirst Corp., and Constellation Brands Inc. [6] Economic Indicators - The S&P Global services PMI decreased to 52.5 in December from 54.1 in the previous month, while the composite PMI fell to 52.7, the lowest in eight months [4]