Tariff uncertainty, AI power strains and Iran risks define Saturday headlines

U.S. markets were closed Saturday, shifting focus to policy, technology and geopolitics. The Supreme Court issued no ruling on the Trump administration's tariff case, while Treasury Secretary Scott Bessent said potential refunds could be paid in installments. The FCC authorized 7,500 more second-generation Starlink satellites, xAI bought five additional 380 MW gas turbines and SanDisk reportedly planned price increases amid tight memory supply. Huawei led China's handset market in the first week of 2026 with a share above 20%, while Apple ranked second. Trump was briefed on new military-strike options targeting Iran, with no final decision reported.