Sandisk Corporation (NASDAQ:SNDK) is one of the noteworthy S&P 500 stocks Jim Cramer highlighted. Cramer noted that the company has been the best performer among the S&P 500 in January, as he stated: Why don’t we start with the winners, where four of the top 10 performers were memory and data storage plays? This memory storage sector is the hottest bull market around, and it comes on top of some amazing runs in 2025. Sandisk came in first place, up 143% in January on top of being last year’s best performe ...

Core Insights - Regional bank stocks experienced significant declines following Zions Bancorporation's announcement of a $50 million charge-off for bad loans, raising concerns about loan quality in the sector [1][3][8] - The broader U.S. equity markets closed lower amid ongoing U.S.-China trade tensions and the release of various earnings reports, with the Nasdaq down 0.5%, S&P 500 down 0.6%, and Dow down 0.7% [2] Regional Banks - Fifth Third Bancorp and Regions Financial were among the largest decliners in the S&P 500, each dropping nearly 6% after Zions Bancorporation's warning about charge-offs [3][8] - Western Alliance's shares fell approximately 11% due to issues with a fraudulent borrower, contributing to the negative sentiment in the regional banking sector [3][8] Data Storage and Memory Chip Sector - Companies in the data storage and memory chip sectors saw gains, driven by analyst upgrades and strong demand linked to AI growth [2][8] - Micron Technology's shares rose nearly 6% following price-target increases from Citi and UBS, citing expected benefits from supply shortages amid rising AI demand [9] - Western Digital and Seagate Technology also experienced stock price increases of about 5% and 3%, respectively, due to raised targets from Wedbush, indicating a tight supply outlook for data storage [9] Cybersecurity Sector - F5, a cybersecurity firm, saw its shares plummet nearly 11% after disclosing it was targeted by a significant cyberattack attributed to a nation-state actor [5] Logistics Sector - J.B. Hunt Transport Services' shares surged 22% after exceeding third-quarter sales and profit estimates, driven by improvements in efficiency and network balance in its intermodal business [6] Legal Issues - Kenvue's shares fell about 13% following a lawsuit in the UK alleging that its baby powder caused cancer, which echoes similar claims against its former parent company, Johnson & Johnson [4]