Stocks making the biggest moves premarket: Delta Air Lines, WK Kellogg, PTC, AMD and more

Check out the companies making headlines in premarket trading. Delta Air Lines — Shares advanced nearly 12% before the opening bell after the airline reinstated its 2025 profit outlook , and second-quarter revenue and net income exceeded analyst estimates. Brazilian stocks — The iShares MSCI Brazil ETF (EWZ) dropped nearly 2% premarket after President Donald…