Stock Market Today: Dow Futures Drop As Iran Flags Ceasefire Violation, Trump Says Arms 'Will Remain In Place'—Arrive AI, Costco In Focus (UPDATED)

(Editor’s note: The future prices of benchmark tracking ETFs, the lede, the economic data and the headline were updated in the story.)
U.S. stocks fell on Thursday, following Wednesday’s sharp rebound. Futures of the major benchmark indices were lower after Iran accused Washington of violating the ceasefire.
On the economic front, the real GDP growth for the fourth quarter was revised down to a modest 0.5% annual rate. Meanwhile, consumer dynamics in February saw personal income dip by 0.1%, even as personal consumption expenditures climbed 0.5%, pushing the PCE price index up 0.4% for the month and 2.8% annually.
Adding to the complex backdrop, the initial jobless claims for the week ending April 4 rose by 16,000 to 219,000.
In a post shared on X, Iranian parliamentary speaker Mohammad Ba