Asian markets are experiencing a downturn, primarily influenced by a selloff in Big Tech stocks and ongoing anxiety surrounding the U.S. elections. The Nikkei index and other regional shares have shown mixed performance, with concerns over rate changes and geopolitical risks contributing to market volatility. The Bank of Japan (BOJ) has urged Japanese banks to remain vigilant against potential market tail risks, a warning echoed by various financial analysts. Additionally, the Japanese yen has been under pressure, prompting discussions about its stability amid fluctuating dollar values and declining yields. Investors are closely monitoring upcoming election results and inflation data in Japan, which could further impact market sentiment.