T-Mobile US has signed an amended and restated credit agreement to expand and extend its unsecured revolving credit facility with JPMorgan Chase Bank and other lenders. The facility increases to $10.0 billion from $7.5 billion and extends maturity to January 5, 2031, enhancing the company's liquidity and financial flexibility. Borrowings will bear interest based on benchmark rates plus a margin tied to T-Mobile's debt rating.

Several semiconductor stocks, including Microchip Technology, NXP Semiconductors, Texas Instruments, Western Digital, and Allegro MicroSystems, saw significant gains following a broader market rally driven by optimism in AI and tech. The market's positive momentum was also fueled by hopes for easier monetary policy from the Federal Reserve. Western Digital, in particular, benefited from strong demand for data storage solutions tied to the AI sector.

This article examines how John Deere transformed into a tech company focused on data and software, leading to advanced machinery like the autonomous 8R tractor. However, this technological leap creates a "closed loop" where farmers like Jake Lieb lose control over their equipment due to proprietary software and repair restrictions, raising legal and ethical questions about ownership in the digital age. The author suggests "interoperability" as a solution, drawing parallels to policies like the EU's common charger rule, to ensure market fairness and consumer choice.

Jessica Ling, EVP of global advertising at American Express, discusses how Amex is redefining "premium" from a status symbol to access to cultural, travel, dining, and sports experiences, particularly for Gen Z and Millennials. She emphasizes leveraging the brand's heritage of trust and service while driving modern relevance through cultural experiences and personalization. The article also touches on the brand's integrated media strategy and preparations for AI-led commerce.

PayPal Holdings, Inc. (PYPL) has launched its Transaction Graph Insights & Measurement Program, initially available in the U.S. with plans to expand to the UK and Germany. Additionally, PayPal introduced new advertising solutions at CES 2026, signaling its expansion into the digital advertising sector.

Apple is set to release a significantly upgraded Siri in spring 2026, integrating advanced AI like Large Language Models (LLMs) for improved contextual understanding, personalized responses, and seamless app integration. This overhaul aims to address Siri's past limitations, emphasize on-device privacy, and position Apple more competitively in the AI landscape. The enhancements are expected to boost device sales and strengthen Apple’s ecosystem synergy.

Western Digital (NASDAQ: WDC) stock surged 15.8% today after CNBC reported that computer memory chip prices, particularly for DRAM, are set to rise further in 2026 due to AI demand. While Western Digital does not produce DRAM, investors are betting that increasing DRAM prices could lead AI companies to seek cheaper alternatives like HDDs, benefiting Western Digital. Despite the surge, the author suggests Micron (NASDAQ: MU) presents a more compelling bargain due to its higher projected earnings growth rate.

AMD CEO Lisa Su stated that demand for AI is "going through the roof" and that the cost of individual AI chips can be tens of thousands of dollars. She explained that AMD's AI systems bundle dozens of these high-end chips and companies need massive investments in computing power to remain competitive in the AI market. Su projected that the world will need "10 yottaflops" of computing power in the coming years to keep up with AI's rapid growth.

New court documents filed in a lawsuit against BlackBerry Ltd. allege at least three women were fired after reporting a "toxic" and "boys' club" culture within the company. Former BlackBerry CMO Neelam Sandhu initiated the lawsuit, alleging sexual harassment and retaliation by CEO John Giamatteo. The court filings suggest a pattern of women being terminated after raising complaints, while accused men faced no repercussions.

A broader market rally, driven by investor optimism in artificial intelligence and big tech, led to significant jumps in several semiconductor stocks. Microchip Technology, NXP Semiconductors, Texas Instruments, Western Digital, and Allegro MicroSystems all saw substantial gains. Western Digital, in particular, benefited from soaring AI-driven data storage demand, reaching a new 52-week high.