U.S. stock markets experienced significant declines today, with major indexes including the Dow, S&P 500, and Nasdaq all falling sharply. The downturn has been exacerbated by rising bond yields, which have hit their highest levels in a year, and increasing oil prices, following the recent U.S.-China summit that failed to produce clear results. Investors are reacting to inflation concerns, triggering a sell-off in stocks, particularly in the tech sector. Reports highlight a global bond selloff as markets grapple with the implications of rising yields and geopolitical tensions, particularly regarding the Iran situation. As investors shift towards safer assets, futures indicate a continuing risk-off sentiment as the weekend approaches.