Tech, Tariffs, and Treasuries Shape Markets

U.S. bond yields fell and technology stocks weighed on markets Monday as investors assessed new Washington measures, including Treasury buyback plans, Iran sanctions, and threatened tariffs on Canada. The Treasury's potential use of its cash account to fund longer-dated bond purchases helped flatten the yield curve, with 30-year yields down 5 basis points. President Trump threatened 50 percent tariffs on Canadian vehicles, prompting retaliation threats from Prime Minister Carney. Fed Chair Kevin Warsh faces scrutiny ahead of his Jackson Hole speech Friday, with questions over inflation strategy and independence. Bitcoin rose 2 percent to near $80,000, while oil fell 2.5 percent.