Semiconductor stocks are falling at Tuesday's open, with the iShares Semiconductor ETF (SOXX) down 2% and the Invesco QQQ Trust (QQQ) down 1%. Intel leads the decline, dropping 3% to $86.68, while NVIDIA and AMD stocks both slip 2% to $217.18 and $460.52 respectively. The selloff is driven by a global bond market downturn, pushing the 10-year Treasury yield to 4.8%, a multi-year high. Rising oil prices above $91 and a reported Strait of Hormuz closure due to renewed U.S.-Iran strikes are compounding the pressure, tightening the macro backdrop for growth stocks.