U.S. stock futures fell Thursday after the Dow Jones, S&P 500 and Nasdaq 100 closed lower Wednesday. The Dow futures declined 0.48%, S&P 500 futures fell 0.65% and Nasdaq 100 futures dropped 1.06%, while the 10-year Treasury yield reached 5.14% and the two-year yield stood at 4.9%. Treasury Secretary Scott Bessent said President Donald Trump's aviation restrictions had shut down 80% to 90% of Iran's external flights under Operation Economic Outcast. Iranian Security Chief Mohsen Rezaee warned neighboring countries against enforcing U.S. sanctions and said the Strait of Hormuz would not reopen until conditions were met. Markets priced a 70.9% probability of a Federal Reserve rate hike after its October meeting, according to CME Group's FedWatch tool. Bitcoin fell 2.60% to $83,705.36, while WTI crude rose 2.38% to about $94.35 a barrel and spot gold declined 0.51% to $4,265.59 an ounce. Investors were also watching earnings from Costco Wholesale, Darden Restaurants, TD Synnex and BlackBerry, along with economic data on jobless claims, new-home sales and manufacturing activity.