U.S. stock indexes closed lower on Tuesday as oil prices and bond yields rose following military strikes on Iran, with the S&P 500 falling 0.7%, the Dow Jones dropping 0.8%, and the Nasdaq sliding 1%. ^[1] The Dow Jones Industrial Average fell 0.7% to 53,185 points, the S&P 500 dropped 0.33% to 7,686, and the Nasdaq Composite declined 0.12% to 26,370 on Monday. ^[2] The Bank of Korea reported that the outstanding value of foreign securities held by South Korean institutional investors reached a record US$549.68 billion as of the end of June. ^[3] Technology stocks were among the heaviest weights on the market, with Nvidia falling 1.5%, Amazon dropping 1.9%, and Advanced Micro Devices giving up 2.4%. ^[4] The yield on the 10-year U.S. Treasury rose to 4.79% from 4.75% late Monday, while the yield on the 2-year Treasury rose to 4.39% from 4.34% late Monday. ^[5] Despite Monday's losses, the New York Stock Exchange ended August with better results than the previous month, with the S&P 500 gaining 1.13% and the Nasdaq rising 1.76% for the month. ^[6] Moderna announced promising results from an advanced-stage trial for a melanoma therapy, causing its stock to rise to $140 per share, a 156% increase from the previous month. ^[7] Nvidia, a leading US chipmaker in AI, saw its stock value grow 9.57% over the last 30 days following the release of second-quarter 2027 earnings showing a 126% year-over-year increase in net income. ^[8] During the cited period, the Nasdaq Composite Index jumped 21.4 percent, the S&P 500 rose 14.9 percent, and the Japanese Nikkei 225 soared 37.2 percent. ^[9]