On February 19, 2026, concerns surrounding massive investments in artificial intelligence and escalating tensions between the United States and Iran weighed heavily on the financial markets across Asia. In Japan, the Nikkei 225 index fell by 1.2% to end at 56,797.22, primarily due to significant losses in shares of major banks, which were affected by fears relating to the potential decline of private credit companies. MUFG, for instance, experienced a 2.6% drop following alarming reports about financial institutions exposed to the AI sector. Meanwhile, in Hong Kong, the Hang Seng index saw a slight decrease of 0.6% to 26,544.62 as trading resumed post-Lunar New Year. However, markets in mainland China and Taiwan remained closed until the following week. On a positive note, South Korea's Kospi index rose by 2.2% to 5,803.40, driven by a surge in defense contractor stocks like Hanwha Aerospace which saw an impressive increase of 8.6%. Conversely, Australia's S&P/ASX 200 index edged down by 0.1% to 9,075.70, signaling mixed reactions in the region. In the U.S., the S&P 500 index dipped by 0.3% to 6,861.89, driven by varied corporate performances. Notably, Booking Holdings suffered a significant loss of 6.1%, despite reporting quarterly profits that exceeded analysts' expectations. Similarly, Walmart's stock fluctuated as the company initially projected a 2.7% gain before concluding the day with a loss of 1.4%, following a profit outlook that disappointed Wall Street. On a brighter note, oil companies benefited from rising crude prices, with Occidental Petroleum surging by 9.4% on reporting stronger-than-expected profits. Adding to the mixed financial signals was the Federal Reserve's stance, indicating they would require further evidence of declining inflation before considering interest rate cuts. A declining number of applications for unemployment benefits hinted at a potential slowdown in layoffs, contributing to a somewhat cautious market outlook amidst the prevailing concerns regarding global stability and economic futures.